History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Contents

1936 08
CONTENTS:

Pick-Ups. . . . . . . . . . . . . . . . . . . . . . 3

"Air-Commodore" Has High Gain and Selectivity. . . . 4

Radio Makes the Airways Safe. . . . . . . . . . . . . 5

Pedal-Driven Teleradio. . . . . . . . . . . . . . . . 6

"Empire Shortwave Three". . . . . . . . . . . . . . . 7

A Simple Five-Metre Battery Receiver. . . . . . . . . 14

Palec Vacuum Tube Voltmeter. . . . . . . . . . . . . 16

Adding Class B to the "Sky-Cruiser Battery Four". . . 17

Radio Ramblings. . . . . . . . . . . . . . . . . . . . 19

Systematic Servicing Brings Best Results. . . . . . . 20

"Simplified D.W. Battery Money-saver". . . . . . . . . 22

The ABC of Multi-Range Meter Design. . . . . . . . . . 27

A Nine·-Range D.C. Multi-Meter. . . . . . . . . . . . . 29

Radio Step by Step (3). . . . . . . . . . . . . . . . . 32

The Lighter Side of DX. . . . . . . . . . . . . . . . 33

Prize-Winning Transmitter Has Worked All Continents. . 34

Choosing and Using a Vacuum-Tube Voltmeter. . . . . . . 36

More About the 6L6 Beam Power Amplifier. . . . . . . . 39

The AU-Wave All-World DX News. . . . . . . . . . . . . . 43

DX Champion Logs 600 Stations in Five Years. . . . . . . 44

"Card-Hunting" is Not Sole Aim of Dxing. . . . . . . . . 46

Identifying Shortwave Stations. . . . . . . . . . . . . . 47

Universal Time Conversion Indicator. . . . . . . . . . . . 48

DX Contest Arouses Widespread Interest. . . . . . . . . . 49

DX News and Views. . . . . . . . . . . . . . . . . . . 50

Logging South American Stations. . . . . . . . .. . . . . 51

Frequency Re-Shuffle For Japanese Broadcasters. . . . . . . . 52

Visiting DX Stations (3). . . . . . . . . . . . . . . . . . 53

China to have High-Power S.W. Station. . . . . . . . . . 55

All-Wave All-World DX Club-List of Members. . . . . . . . 56

1936 11
CONTENTS:

"Pick-Ups". . . . 3

Radiokes Factory Makes Thousands of Parts Weekly. . . . 4

Sydney Ambulances To Carry Radio. . . . 5

The Outdoor Portable. . . . 6

Hints And Tips For Set Designers. . . . 8

The Beginner's Battery Two. . . . 10

The Month On Shortwave. . . . 13

The Air-Ace Dual-Wave Five. . . . 14

What’s New In Radio. . . . 16

Newcastle Hamfest A Great Success. . . . 18

This Pentode Business. . . . 20

Acoustical Labyrinth In New Stromberg-Carlson Release. . . . 23

XMHD— A Popular Chinese Broadcaster. . . . 26

A Super-Regenerative Five-Metre Receiver. . . . 27

Radio Ramblings. . . . 30

Making A Reiss Microphone. . . . 32

Building An Output Meter. . . . 33

The A.T.R.S. Bulletin. . . . 35

The Cathode Ray Oscillograph At Work (3). . . . 36

All-Wave All-World DX News. . . . 39

Shortwave Stations Of The World (3). . . . 40

DX Doings On The Short Waves. . . . 43

VK Amateurs — Additions and Amendments. . . . 44

Shortwave Station Addresses. . . . 45

DX Notes and News. . . . 46

All-Wave All-World DX Club — List of Life Members. . . . 48

1936 12
CONTENTS:

Radio Gifts For Christmas. . . . 3

"Scout Battery Three". . . . 6

Radio Ramblings. . . . 10

High Quality Reproduction At Low Cost. . . . 14

New £50,000 Factory Planned By Ever-Ready. . . . 16

The "Scout Superhet Four". . . . 17

This Pentode Business (2). . . . 22

The Story Of Television (1). . . . 24

Radio Step By Step (5). . . . 26

Party Radio Magic. . . . 28

The Cathode Ray Oscillograph At Work (4). . . . 30

Radio In India. . . . 33

The A.T.R.S. Bulletin. . . . 34

What's New In Radio. . . . 36

Radio Book Reviews. . . . 37

Round The N.Z. "B" Stations. . . . 38

VK Amateur Stations — Additions And Amendments. . . . 40

All-Wave All-World DX News. . . . 41

Radio VK4DO Is Model Amateur Station. . . . 42

Schedules Of Japan's New Shortwave Service. . . . 42

Shortwave Stations Of The World (4). . . . 43

DX Notes And News. . . . 45

1937 02
CONTENTS:

Assembling And Wiring The "Fidelity Broadcast Five". . . . 3

Radio Ramblings. . . . 6

Building A Code Practice Oscillator. . . . 10

Radio Book Reviews. . . . 13

What's New In Radio. . . . 14

The A.T.R.S. Bulletin. . . . 16

Licensing Of Servicemen Urgently Needed. . . . 16

Nevi Series Of Articles On Amateur Radio. . . . 17

Breaking Into The Amateur Game. . . . 18

Learning The Code. . . . 20

"Getting Out" On Five Metres. . . . 23

First Radio Signal From U.S. Heard In 1923. . . . 25

5-Metre Push-Pull Oscillator. . . . 26

The Story Of Television (3). . . . 28

Hints And Tips For DX Beginners. . . . 30

The Lure Of DX Listening. . . . 32

Radio Step By Step (6). . . . 33

Background Hiss In Superhets. . . . 34

Five-Metre Enthusiasts Asked To Use Superhets. . . . 36

All-Wave All-World DX News. . . . 37

DX Report Forms Save Time And Ensure Replies. . . . 38

Preparing Reports In German And Italian. . . . 39

Times To Listen For World Shortwave Stations. . . . 40

The Month On Shortwave. . . . 41

DX News Flashes. . . . 42

DX Notes And News. . . . 43

VK Amateur Stations — Additions And Amendments. . . . 45

New Range Of Radiokes Power Transformers. . . . 46

World Shortwave Stations (6). . . . 47

W.I.A. Field Day. . . . 48

1937 03
CONTENTS:

The Story Of The Ever Ready Air Cell. . . . 3

Field Tests On First Air Cell Receivers. . . . 4

The Companionette Three. . . . 5

Fidelity Broadcast Five — Adding Bass Boosting. . . . 7

The A.T.R.S. Bulletin. . . . 8

Radio Ramblings. . . . 10

Building A Regenerative S.W. Pre-Selector Unit. . . . 14

Amateur Transmits From Bed In Hospital. . . . 18

Breaking Into The Amateur Game (2). . . . 20

The Story Of Television (4). . . . 24

Background Hiss In Superhets. . . . 26

Radio Step By Step (7). . . . 29

A Portable Line Amplifier. . . . 32

What's New In Radio. . . . 33

Radio Book Reviews. . . . 35

All-Wave All-World DX News. . . . 37

Round The N.Z. "B" Stations (2). . . . 38

Shortwave Stations Of The World (7). . . . 39

DX Notes And News. . . . 41

Manly Radio Club Notes. . . . 42

Some DX Highlights. . . . 43

Ham Jargon. . . . 44

VK Amateur Stations — Additions And Amendments. . . . 45

Big Five-Metre Field Day Planned for March 7. . . . 46

Leaves From A Dxer's Logbook. . . . 47

New Members All-Wave All-World DX Club. . . . 48

1937 04
CONTENTS:

When PCJ Was PCJJ. . . . 3

The 1937 International All-Wave Six. . . . 6

Radio Ramblings. . . . 10

B B.C. Television Signals Heard In Africa. . . . 14

DX Notes And News. . . . 16

Assembling And Wiring The Companionette Three. . . . 18

ZL Amateur Transmitters. . . . 21

A Two-Band Crystal Controlled Transmitter. . . . 29

Verifying All Continents. . . . 36

Breaking Into The Amateur Game. . . . 38

The A.T.R.S. Bulletin. . . . 39

Intermittent Faults Are Hardest To Locate. . . . 39

All-Wave All-World DX News. . . . 43

What's New In Radio. . . . 44

Leaves From A Dxer's Log-Book. . . . 45

"Radio World" Vol. 1 — Index To Technical Features. . . . 48

1937 05
CONTENTS:

"Radio World" Guide To The Show. . . . 3

The 1937 Empire All-Wave Three. . . . 6

Assembling, Wiring And Aligning The 1937 International All-Wave Six. . . . 10

Radio Ramblings. . . . 14

The Story Of Television (5). . . . 18

Breaking Into The Amateur Game. . . . 20

Keeping In Touch With Darwin. . . . 23

25 Years In Amateur Radio (1). . . . 24

Seven-Valve Dual-Waver Gives Excellent Results. . . . 26

Inverse Feedback Conquers "Pentode Tone"! . . . . 28

Image Frequency Interference On The Short Waves. . . . 30

Round The N.Z. "B" Stations (3). . . . 32

Latest Radiokes Tri-Colour Dial A Striking Success. . . . 35

The A.T.R.S. Bulletin. . . . 36

Radio Step By Step (8). . . . 38

"Keep Up The Good Work". . . . 40

All-Wave All-World DX News. . . . 41

All-Continent Hook-Up In 15 Minutes. . . . 42

Leaves From A Dxer's Log Book. . . . 43

DX Notes And News. . . . 45

North Suburban Radio Club News. . . . 47

What's New In Radio. . . . 48

1937 06
CONTENTS:

The Eaglet All- Wave Two. . . . 3

Communications Type Superhet For Amateurs. . . . 6

Radio Ramblings. . . . 10

Assembling And Wiring The 1937 Empire All-Wave Three. . . . 14

25 Years In Amateur Radio (2). . . . 18

World Shortwave Stations. . . . 21

Breaking Into the Amateur Game (5). . . . 29

Across The Atlantic On Five Metres. . . . 32

Radio Step By Step. . . . 34

What's New In Radio. . . . 35

All-Wave All-World DX Club — New Members. . . . 37

The A.T.R.S. Bulletin. . . . 38

Eliminating Man-Made Static. . . . 38

Locating And Curing Hum. . . . 39

The All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

DX News And Views. . . . 45

VK Amateur Stations — Additions And Amendments. . . . 47

1937 07
CONTENTS:

The Amateur Communications Eight. . . . 3

Radio Ramblings. . . . 10

New Radio Installations Regulations. . . . 15

The Jones' Super-Gainer Two. . . . 16

25 Years In Amateur Radio (3). . . . 18

"Radio Aid" Explorers Track Down Noise. . . . 21

Designing Vibrator Type "B" Eliminators. . . . 22

Assembling And Wiring The 1937 Eaglet All-Wave Three. . . . 26

Radio Step By Step (10). . . . 27

The A.T.R.S. Bulletin. . . . 28

Breaking Into The Amateur Game (6). . . . 30

What's New In Radio. . . . 34

The All-Wave All-World DX News. . . . 37

Trans-Pacific DX On 10 Metres. . . . 38

Erecting 45-Foot Masts. . . . 40

Shortwave Review. . . . 41

DX News And Views. . . . 44

Climbing 6ME's 400-Foot Mast. . . . 48

1937 08
CONTENTS:

"Sky-King Dual-Wave Five". . . . 3

Ham Jargon. . . . 5

"Air-Cell Pentagrid Seven". . . . 6

"Fluttering On The Short Waves". . . . 8

Radio Ramblings. . . . 10

Trans-Tasman Reception With "Companionette". . . . 15

YL Radio Enthusiast Builds 15-Valve S.S. Super. . . . 16

High Fidelity Amplifier Uses Push-Pull 2A3's. . . . 18

Over 30,000 Miles Covered In Round Table Hook-Up. . . . 20

The "Jones' Super-Gainer Two". . . . 22

Breaking Into The Amateur Game. . . . 26

Home-Built Talkie Plant Gives Excellent Performance. . . . 29

Multi-Band Transmitter Uses Unique Assembly. . . . 30

The A.T.R.S. Bulletin. . . . 32

Tracking Down Distortion. . . . 32

What's New In Radio. . . . 34

New 5-Metre Records. . . . 36

25 Years In Amateur Radio (4). . . . 37

All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

DX Contests Arouse Widespread Interest. . . . 42

DX News And Views. . . . 43

Round The Shacks (1). . . . 44

Round The N.Z. "B" Stations (4). . . . 45

Crown Radio Shift To Larger Factory. . . . 47

1937 10
CONTENTS:

The "1937 Outdoor Portable Four". . . . 3

Assembling And Wiring The "Tom Thumb Two". . . . 8

Latest Radiokes Kit-Set Is The "Advance 1937". . . . 10

Radio Ramblings. . . . 12

Radio Club Caters For Transmitters And S.W. Listeners. . . . 16

25 Years In Amateur Radio. . . . 18

VK Amateur Calls. . . . 21

A.C./D.C. Receiver Uses New Radiotron Barretter. . . . 32

Breaking Into The Amateur Game (9). . . . 34

Nine-Channel Ultra S. W. Radio Telephone Link. . . . 38

What's New In Radio. . . . 40

A.T.R.S. Institute — Queensland Branch. . . . 42

Radio Step By Step (11). . . . 44

All-Wave All-World DX News. . . . 45

Shortwave Review. . . . 46

DX News And Views. . . . 49

Zero Beat Radio Club Notes. . . . 50

Round The Shacks (3). . . . 51

Shortwave Station Addresses. . . . 52

1937 11
CONTENTS:

De Luxe Fidelity Eight. . . . 3

Valve Manufacture In Australia. . . . 8

Radio Ramblings. . . . 10

W.I.A. National Field Day On Dec. 4. . . . 13

Breaking Into The Amateur Game (10). . . . 14

Round The N.Z. "B" Stations (5). . . . 18

The 1937 Outdoor Portable Four. . . . 20

25 Years In Amateur Radio (7). . . . 24

Radio Step By Step (12). . . . 26

Improved Operating Conditions For 1C6 On Shortwave. . . . 28

What's New In Radio. . . . 32

New Adelaide Station Has Up-to-date Transmitter. . . . 36

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Second "Radio World" S. W. Contest. . . . 39

DX News And Views. . . . 41

Ten Thousand Miles On Five Metres. . . . 42

Radio Aids Flying Doctor In Outback. . . . 43

Round The Shacks (4). . . . 45

Shortwave Station Addresses. . . . 46

E. Neill Wins First S. W. DX Contest. . . . 47

VK Amateur Transmitters — Additions And Amendments. . . . 48

1937 12
CONTENTS:

The A.C. "Empire All-Wave Three". . . . 3

Tasman Crossed On "Five". . . . 7

Radio Ramblings. . . . 10

Battery Amateur Communications Superhet. . . . 12

A 15-Watt Public Address Amplifier. . . . 15

25 Years In Amateur Radio (8). . . . 18

Making A Reiss Microphone. . . . 20

15 And 25-Watt Public Address Amplifiers. . . . 22

Radio Step By Step (13). . . . 25

Assembling And Wiring The De Luxe Fidelity Eight. . . . 26

Round The Shacks (5). . . . 29

Fiftieth Transmitting Member Joins Lakemba. . . . 30

What's New In Radio. . . . 34

Breaking Into The Amateur Game (11). . . . 38

All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

Shortwave Station Addresses. . . . 44

DX News And Views. . . . 45

VK Amateur Transmitters - Additions And Amendments. . . . 47

Level Indicator For Public Address Systems. . . . 48

1938 01
CONTENTS:

"Empire" Power Pack And Amplifier. . . . 3

1938 Contest For Best Amateur Telegraphist. . . . 8

Breaking Into The Amateur Game (12). . . . 10

Radio Ramblings. . . . 12

Radio Valves In The Making (1). . . . 14

Schedule Of PCJ Experimental Transmissions. . . . 16

Twenty-Five Years In Amateur Radio (9). . . . 18

World Shortwave Stations. . . . 19

Battery Amateur Communications Superhet. . . . 29

Eight-Valve T.R.F. Receiver Gives High Quality Output. . . . 36

National Field Day An Enjoyable Outing. . . . 38

What's New In Radio. . . . 41

All-Wave All-World DX News. . . . 43

Shortwave Review. . . . 44

DX News And Views. . . . 47

Australian Trained Radio Servicemen's Institute — Queensland Division. . . . 48

1938 02
CONTENTS:

The Fidelity Dual-Wave Six. . . . 3

New Ever Ready Factory Opened By Prime Minister. . . . 8

Radio Ramblings. . . . 10

More About The A.C. Empire All-Wave Three. . . . 14

Aden Amateur Station On The Air. . . . 16

Five Metres In S. Australia. . . . 18

VK2NO Advanced U.H.F. Receiver. . . . 19

Radio Valves In The Making (2). . . . 24

Radio Step By Step (14). . . . 27

Lavishly-Equipped Radio Service Workshop. . . . 29

What's New In Radio. . . . 32

Breaking- Into The Amateur Game (13). . . . 35

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Third S.W. DX Contest. . . . 41

Round Table QSO Smashes Previous Record. . . . 42

Around The Shacks (6). . . . 43

1937 Eventful Year For Shortwave Dxers. . . . 44

DX News And Views. . . . 47

1938 03
CONTENTS:

Two-Band Portable Transmitter-Receiver. . . . 3

Battery-Operated Portable Transmitter. . . . 10

Radio Ramblings. . . . 12

Japanese B.C. Stations. . . . 15

Sydney Dxer Logs Europe on B.C. Band. . . . 16

Assembling And Wiring the Fidelity Dual-Wave Six. . . . 18

Two-Valve A.C. Shortwaver Uses Coil-Switching. . . . 20

Radio Valves In The Making (3). . . . 24

A Triple-Range Valve Voltmeter. . . . 27

What’s New In Radio. . . . 30

Radio Step By Step (15). . . . 32

Two-Valve Local Station Superhet. . . . . 35

All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Round The Shacks (7). . . . 40

1938 Radio Handbook Now Available. . . . 43

Police Signals Heard 10,000 Miles. . . . 46

DX News And Views. . . . 47

Shortwave Station Addresses. . . . 48

1938 04
CONTENTS:

Comet Superhet Four. . . . 3

Crown Releases Push-Button Kit For Set-Builders. . . . 6

Portable Five-Metre Transceiver. . . . 9

Radiokes 1938 D.W. Moneysaver Superhet. . . . 14

Pre-Selector Unit Sharpens Tuning, Increases Gain. . . . 16

50-Watt Transmitter For New Power Limit. . . . 18

Infinite Baffle Aids Tonal Fidelity. . . . 20

Shortwave Aerials For DX Reception (1). . . . 23

"Eaglet" Gives Outstanding Performance. . . . 26

Building A Midget Three-Watt Amplifier. . . . 27

DX Contest Winner Has Logged Over 100 Countries. . . . 30

Tracking Down Power Interference (1). . . . 31

What's New In Radio. . . . 33

The All-Wave All-World DX News. . . . 37

Sun-spot Activity Now Approaching Maximum. . . . 38

Shortwave Review. . . . 39

Hourly Tuning Guide. . . . 42

Fourth "Radio World" S.W. DX Contest. . . . 46

Round The Shacks (8). . . . 46

DX News And Views. . . . 47

VK Amateur Transmitters — Additions And Amendments. . . . 47

Index Of Technical Features, "Radio World," Vol. 2. . . . 48

1938 05
CONTENTS:

The Air-cell Dual-wave Four. . . . 3

Radiokes Release New Range of Power Transformers. . . . 7

Radio Ramblings. . . . 8

The Comet Superhet Four. . . . 10

An Appreciation From A.T.R.S.I. .. . . 12

"Pirate" Uses Lakemba Club Call. . . . 14

The Triode And Its Applications. . . . 16

The Scout Battery Three. . . . 18

A Trip Through The Ever Ready Factory. . . . 22

Shortwave Aerials For DX Reception (2). . . . 27

Tracking Down Power Interference (2). . . . 30

What's New In Radio. . . . 34

A.O.C.P. Questions And Answers. . . . 39

All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

DX Notes And News. . . . 45

Hourly Tuning Guide. . . . 47

1938 06
CONTENTS:

The "Auto-Tune Dual-Wave Five". . . . 3

Calstan Test Oscillator. . . . 5

Radio Ramblings. . . . 6

Radiokes Release Eight-Station Teletuner. . . . 10

More About The Air-Cell D.W. Four. . . . 11

Lakemba Club Holds Eighth Annual Reunion. . . . 14

32-Watt Amplifier Uses 6L6G's In Pushpull. . . . 18

A.O.C.P. Questions And Answers. . . . 20

World Shortwave Stations. . . . 22

Tracking Down Power Interference (3). . . . 28

Round The Shacks (8). . . . 32

What's New In Radio. . . . 33

All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

Hourly Tuning Guide. . . . 43

American Radio Police Calls. . . . 44

Fourth S.W. DX Contest. . . . 45

DX News And Views. . . . 46

Ex-Fingerprint Expert Conducts PCJ Session. . . . 47

1938 07
CONTENTS:

The "Auto-Tune Dual-Wave Five". . . . 3

Model "Q" Console Is Latest S.T.C. Release. . . . 10

Four-Watt Beam Amplifier. . . . 11

Home Recording For The Amateur. . . . 14

Amateur Station Equipment (1) — Monitor And Modulation Meter. . . . 18

World Shortwave Stations. . . . 23

A.O.C.P. Questions And Answers. . . . 27

Pentode And Beam Tetrode Valves. . . . 29

200 Visitors Inspect Philips Valve Works. . . . 31

What's New In Radio. . . . 32

Palec "VCT" Valve And Circuit Tester. . . . 35

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 41

Official Australian Radio Service Manual. . . . 45

DX News And Views. . . . 46

"1938 De Luxe Fidelity Eight". . . . 47

International Amateur Prefixes. . . . 48

1938 09
CONTENTS:

"Atlas All-Waver". . . . 3

Brimar Releases New 6AG6-G Output Pentode. . . . 8

Rectifiers, Filters, And Hum. . . . 10

Radio Ramblings. . . . 12

The "Challenger Dual-Wave Six". . . . 16

The "Ultra-Shorts" In Review. . . . 17

A.O.C.P. Questions And Answers. . . . 21

High Fidelity Reception Of Local Stations. . . . 24

Radio Reminiscences. . . . 27

The "1938 De Luxe Fidelity Eight". . . . 28

The "Trans-Tasman U.H.F. Two". . . . 30

What's New In Radio. . . . 32

Lectures On Oscillograph And Home Recording. . . . 35

"Empire" Power-Pack Wiring Plan. . . . 37

Philips Photo Cell Has Many Applications. . . . 38

Assembling And Wiring The "Air-Ace Communications Four". . . . 39

"Vibra Dual- Wave Five". . . . 44

Shortwave Review. . . . 45

1938 10
CONTENTS:

"1938 Amateur Communications Eight". . . . 3

"1938 Outdoor Portable Four". . . . 6

Adding A Tuned R.F. Stage To The "Atlas All-Waver". . . . 10

Portable Transmitter Taken On Radio Hike. . . . 12

EMI Makes Good Indicator For Absorption Frequency Meter. . . . 15

A.O.C.P. Questions And Answers. . . . 17

The Ultra-Searcher. . . . 20

Radio Book Reviews. . . . 22

Contest Winner VK2ADE Operates De Luxe Station. . . . 24

The "Ultra-Shorts" In Review (2). . . . 25

Getting That Trophy-Winning "Verie". . . . 28

1.4-Volt Valves Announced In States. . . . 30

What's New In Radio. . . . 32

Building The A.C. Version Of The "Air-Ace Communications Four". . . . 36

All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

Hourly Tuning Guide. . . . 44

Result Of Fifth DX Contest. . . . 45

O. Washfold Wins QSL Card Contest. . . . 47

1938 11
CONTENTS:

Nineteen Range Combination Vacuum Tube Voltmeter And Multi-meter. . . . 3

17-Watt Amplifier Uses Push-Pull 6L6G's. . . . 8

Adding A Pentode Stage To The Atlas All-Waver. . . . 10

Aerial Beacon Erected On Ever Ready Building. . . . 12

Planning Radio Set Sensitivity. . . . 14

New Perth Transmitter Now On Air. . . . 16

Assembling And Wiring The 1938 Amateur Communications Eight. . . . 17

Assembling And Wiring The 1938 Outdoor Portable Four. . . . 21

CFGP Is British Empire's Most Northern Station. . . . 29

The "Ultra-Shorts" In Review. . . . 30

Coil-Winding Data For Philips EK2G Octode. . . . 31

Unique Home Recording Demonstration. . . . 32

What's New In Radio. . . . 34

Radio Book Reviews. . . . 36

All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 43

DX News And Views. . . . 45

1938 12
CONTENTS:

The "Sky-King Dual-Wave Five". . . . 3

Resistance And Capacity Checker. . . . 6

Tasma 1.4-Volt Valve Receiver Gives Outstanding Results. . . . 7

More About The 5-Metre Super-Gainer. . . . 10

"Hi-Fi" Speaker Baffle. . . . 12

Radio For Bush Search Parties. . . . 14

Waverley And Hurstville Radio Club Notes. . . . 16

Improved Performance From 6K8G Converter. . . . 17

Home Recording (1). . . . 21

World Shortwave Stations. . . . 23

5-Band 10- To 160-Metre 'Phone And C.W. Transmitter. . . . 29

What's New In Radio. . . . 34

All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

Hourly Tuning Guide. . . . 46

5- And 10-Metre Transmitter Next Month. . . . 48

1939 01
CONTENTS:

Queensland Demonstration Of New 1.4-Volt Valve Receiver. . . . 1

1.4-Volt Valves Ideal F or Country And Portable Radios. . . . 3

Rola Reproducers F or New 1.4-Volt Valves. . . . 8

Special Ever-Ready Cell For 1.4-Volt Valves. . . . 9

The "One-Four Portable Five". . . . 10

"1939 Sky-King Dual-Wave Five". . . . 18

Planning Receiver Selectivity. . . . 21

World Shortwave Stations. . . . 23

Home Recording (2). . . . 30

National Field Day Outing. . . . 32

What’s New In Radio. . . . 34

Radio Book Reviews. . . . 35

Resistance And Capacity Checker. . . . 37

The All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

Hourly Tuning Guide. . . . 45

Readers Invited To Join Australian Corps Of Signals. . . . 47

1939 02
CONTENTS:

5- And 10-Metre 'Phone And C.W. C.C. Transmitter. . . . 3

Palec Primary Frequency Standard. . . . 10

Radio Ramblings. . . . 13

Building A Field Strength Meter. . . . 14

Assembling And Aligning The "One-Four Portable Five". . . . 18

Home Recording (3). . . . 21

Photographing Heart Beats. . . . 24

The D.B.K. 9- To 1000-Metre Communications Receiver. . . . 26

DX On The "Ultra-Highs". . . . 29

Rola Gesture To Bush Fire Sufferers. . . . 32

What’s New In Radio. . . . 33

Vibrator Unit : Trans-Tasman P.B. Five. . . . 36

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 45

1939 03
CONTENTS:

5- And 10-Metre Phone and C.W. Transmitter. . . . 3

Stromberg-Carlson 1939 Dealers' Conference. . . . 6

Public Address Outfit Uses New Projection Unit. . . . 8

"One-Four Portable Five" On Test. . . . 9

The "Trans-Tasman All-Wave P.B. Five". . . . 10

Radio Aids The Outback. . . . 13

Hurstville Radio Club Notes. . . . 16

Building A Pocket Multi-Meter. . . . 17

Building A Code Practice Oscillator. . . . 22

Learning The Code. . . . 23

How Dry Batteries Are Made. . . . 24

Acoustic Filter In Latest Rola Units. . . . 26

The 2NO Amateur Band Superhet. . . . 29

The Universal Receiver. . . . 31

What's New In Radio. . . . 35

All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 45

All-Wave All-World DX Club — New Members. . . . 47

DX Alphabet — Phonetic Pronunciations. . . . 48

1939 04
CONTENTS:

How To Make Home Recordings. . . . 3

Standardised Components For Set-Builders. . . . 6

Important New Rola Patent. . . . 7

160 Miles On Five Metres. . . . 8

Club Contests In Full Swing. . . . 10

"Sky-Hawk All-Wave Three". . . . 12

This Thing Called "Q". . . . 18

15 To 600-Metre Marine Receiver. . . . 22

The Velco 1939 Mastery Battery Five. . . . 27

Modern Trends In Set Design. . . . 32

What’s New In Radio. . . . 35

Leaves From A Serviceman’s Diary. . . . 37

"Find-The-Fault" Contest For Readers. . . . 38

Shortwave Editor Tests DX Champion Receiver. . . . 40

Shortwave Review. . . . 42

Hundreds Of Constructional Items In Back Issues — Special Offer To Readers. . . . 47

1939 05
CONTENTS:

The Astra Dual-Wave Six. . . . 3

Lakemba Radio Club Reunion. . . . 10

1939 Companionette Three. . . . 12

Radio Ramblings. . . . 15

Find-The-Fault Contest. . . . 16

Hear The World On Tiny Tim. . . . 18

Keep Charging! . . . . 21

Experimenters — Get Down To "Ultra-Shorts". . . . 22

Leaves From A Serviceman’s Diary (2). . . . 24

Installing An Extension Speaker. . . . 26

One-Four Portable On 100-Mile Canoe Trip. . . . 30

The Ultra DX Three. . . . 32

What's New In Radio. . . . 38

1939 Australian Official Radio Service Manual. . . . 40

The All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

Hourly Tuning Guide. . . . 46

Rola "Permacentric" Construction. . . . 48

1939 06
CONTENTS:

The "Astra Dual-Wave Six". . . . 3

The "Ultra DX Three". . . . 6

New Ever Ready Batteries For 1.4-Volt Portables. . . . 8

Fight For Amateur Bands. . . . 10

Simple Portable Aerial. . . . 11

This Thing Called "Q". . . . 12

More About The 1939 Companionette Three. . . . 15

A Portable Valve Checker. . . . 17

More Sets From Back Numbers. . . . 21

A.O.C.P. Questions And Answers. . . . 22

Experimenters - Get Down To Ultra Shorts. . . . 24

Installing An Extension Speaker. . . . 26

A Test-Bench Multi-Vibrator. . . . 28

Making A Reiss Microphone. . . . 31

Leaves From A Serviceman's Diary (3). . . . 32

The Economy Fidelity Amplifier. . . . 33

What's New In Radio. . . . 36

Shortwave Review. . . . 41

Hourly Tuning Guide. . . . 46

1939 07-08
CONTENTS:

Field Test On New S.T.C. Portable. . . . 3

"Sky-Chief Dual-Wave Five". . . . 5

Outstanding Performance From "Our-Four" Portable. . . . 6

Indicator Lights For Radiogram. . . . 9

1939 Atlas All-Wave Three. . . . 10

Economy Fidelity Amplifier. . . . 13

Over 50 Entries For "Find-The-Fault" Contest. . . . 15

Bush Radio Rescue Test. . . . 19

Portables On Parade. . . . 21

Leaves From A Serviceman's Diary (4). . . . 28

The Cathode Ray Oscillograph (l). . . . 29

160 Miles On Five Metres. . . . 32

What's New In Radio. . . . 33

Three New Six-Inch Rola Models: Ideal For Portables. . . . 37

Sixth S.W. D.W. Contest. . . . 38

Shortwave Review. . . . 39

Hourly Tuning Guide. . . . 46

1939 09
CONTENTS:

The Falcon Dual-Wave Four. . . . 3

Six-Band Frequency Meter. . . . 7

Latest Model Ultimate On Test. . . . 8

Wiring And Aligning The Sky-Chief Dual-Wave Five. . . . 10

The Cathode Ray Oscillograph (2). . . . 12

Portable Gear For Bush Radio Tests. . . . 18

Radio Ramblings. . . . 20

Australian Broadcasting Stations. . . . 23

High-Gain Antenna For The Ultra-Highs. . . . 27

1939 Atlas All-Wave Three. . . . 29

Jottings From Readers. . . . 30

Leaves From A Serviceman's Diary. . . . 31

What's New In Radio. . . . 33

Shortwave Review. . . . 39

Hourly Tuning Guide. . . . 45

1939 10
CONTENTS:

Picnic Portable Four. . . . 3

Vulcan Shortwaver. . . . 7

£40,000 S.T.C. Air Raid Shelter. . . . 7

New Era For Battery Radio. . . . 9

War News On The Short Waves. . . . 10

Learn The Morse Code. . . . 11

What's New In Radio. . . . 16

Falcon Dual-Wave Four. . . . 17

Testing Transformer Windings. . . . 18

World Shortwave Stations. . . . 19

1.4-Volt Shortwave Superhet. . . . 24

13.5 Watts From 2A3's In Push-pull. . . . 27

Sixth DX Contest Winner Relates His Experiences. . . . 31

Latest Loggings On Shortwave. . . . 33

Broadcast Band DX Notes. . . . 37

1939 11
CONTENTS:

Fisk Radiola Portable Five. . . . 3

Two Communications "Supers." . . . . 5

Radio Club Notes and News. . . . 8

The Picnic Portable Four. . . . 9

Needle Pointers For Record Users. . . . 15

Leaves From A Serviceman's Diary (6). . . . 18

Shortwave. And All-Wave Receivers From Back Numbers. . . . 20

Meters For A.G. And D.C. Measurements. . . . 22

What's New In Radio. . . . 26

Brown Projection Unit Popular With Public Address Operatives. . . . 28

Three New S.T.C. Releases. . . . 29

A Hint For Smoother Reaction. . . . 30

Shortwave Review. . . . 31

Broadcast Band DX Notes. . . . 36

Broadcast Band DX Contest. . . . 37

Radio In The Outback. . . . 38

All-Wave All-World DX Club-New Members. . . . 40

1939 12
CONTENTS:

Loop Portable Three. . . . 3

The Story of R.C.S. Radio (1). . . . 6

R.C.S. Releases Five-Band Coil Assembly. . . . 8

Mullard World-Master Consolette Gives Outstanding Performance. . . . 10

Junior Class "B" Amplifier. . . . 13

Air-Scout Communications Six. . . . 15

Service Equipment (2). . . . 18

Beam-A-Scope Noise-Killer Aerial. . . . 23

The Vulcan Shortwaver. . . . 26

What's New In Radio. . . . 27

Two New Amplion Speakers. . . . 31

Shortwave Review. . . . 32

"Radio World" All-Wave Oscillator. . . . 37

1940 01
CONTENTS:

The Daventry Dual-Waver. . . . 3

The Story Of R.C.S. Radio (2). . . . 6

Five-Band Communications Superhet. . . . 8

Service Equipment (3). . . . 10

Vulcan Pre-Selector Unit. . . . 13

Choosing A Microphone. . . . 15

"Radio World" All-Wave Oscillator. . . . 17

Waverley Radio Club Notes. . . . 25

What's New In Radio. . . . 26

New Headquarters For Marconi School. . . . 28

"Communications Eight" A Fine Performer. . . . 30

Shortwave Review. . . . 31

Broadcast Band DX Notes. . . . 37

1940 02
CONTENTS:

New A.C.-Battery "Duo" Portable. . . . 3

Book Reviews. . . . 4

1940 Companionette Three. . . . 5

Modulated Oscillators. . . . 9

Midget Three-Watt Amplifier. . . . 11

World-Cruiser Communications Eight. . . . 13

The Story of R.C.S. Radio (3). . . . 27

What's New In Radio. . . . 29

Long-Horn Public Address Speakers. . . . 31

Shortwave Review. . . . 33

1940 03
CONTENTS:

CONSTRUCTIONAL

"Wonder One," 5-band, 1-valve. . . . 23

"Dandy," 3-valve a.c. superhet. . . . . 13

"World Standard for 1940". . . . 3

GENERAL TECHNICAL

U.S. Circuits for the 1940-41 Season. . . . 9

Country Set Circuit Design. . . . 19

A Group Trainer for Morse Code. . . . 11

TEST EQUIPMENT

Laboratory Service for Readers. . . . 20

Testing Radio Components. . . . 33

The Output Meter. . . . 21

SHORT WAVE SECTION

The Month's Loggings. . . . 30

Station Schedules and Changes. . . . 29

Ultra-High-Frequency Notes. . . . 32

JUNIOR TECHNICAL

The Workshop Bench. . . . 36

Care of Tools. . . . 37

TRADE NOTES

"Delta" Test Equipment. . . . 35

Radio Art Union. . . . 35

SPEEDY QUERY SERVICE

Answers to Readers' Problems. . . . 39

1940 04
CONTENTS:

CONSTRUCTIONAL

"Junior" Short-wove Converter. . . . 3

"Bedsider" 2-valve Battery T.r.f. .. . . 7

" R.E." Portable Kit-set. . . . 16

"Scout" Battery-operated T.r.f. .. . . 38

" R.C.S. Version of the Picnic Portable . . . . 14

GENERAL ARTICLES

Letters to the Editor. . . . 13

Radio Saves the Fruit Crop. . . . 13

Air-Test No. 1. . . . 37

Hints and Tips. . . . 42

TEST EQUIPMENT

Valve and Circuit Testers. . . . 9

Laboratory Service for Readers. . . . 43

SHORT-WAVE SECTION

The Month's Loggings. . . . 34

Station Schedules and Changes. . . . 33

Special Notice to DX Club Members. . . . 36

AMPLIFIER SECTION

Amplifiers for Home Use. . . . 17

Amplifier Championship. . . . 19

"Baby Grand" Amplifier. . . . 21

"Big Boy" Power Amplifier. . . . 29

"Fundamental" Power Supply. . . . 25

JUNIOR TECHNICAL

Soldering. . . . 44

Novel Wet Cell. . . . 45

TRADE NOTES

Amplifier Equipment. . . . 20

Morse Code Kit. . . . 42

SPEEDY QUERY SERVICE

Answers to Readers' Problems. . . . 47

1940 05
CONTENTS:

CONSTRUCTIONAL -

"De-Luxe Fidelity 8". . . . 3

"12-Volve Super Set". . . . 9

"Mystery Dual-waver". . . . 15

"Vibra" P.A. Amplifier. . . . 18

"Junior" S. W. Converter for Batteries. . . . 37

GENERAL TECHNICAL -

Crystal circuits. . . . 34

Modest Kitsets. . . . 35

Headache Corner. . . . 17

The Sniper Post. . . . 13

Gang's All Here. . . . 40

Valve Characteristics. . . . 43

AMPLIFIER SECTION

Diphonic Reproducers. . . . 26

Further Notes on Fidelity. . . . 21

AMPLIFIER CHAMPIONSHIP. . . . 24

SHORT-WAVE SECTION

Review. . . . 29

The Month's Loggings. . . . 30

The DX Club. . . . 33

JUNIOR TECHNICAL

Twist Drills. . . . 44

Amplifier Hints. . . . 45

Hints and Tips. . . . 42

Handy Saw. . . . 44

TRADE NOTES

Rola Expands. . . . 15

Murdoch's Kitsets. . . . 35

Philips Valves. . . . 41

Telsen Two-range Meters. . . . 42

Mullard Booklet. . . . 43

SPEEDY QUERY SERVICE

Answers to Readers' Problems. . . . 47

1940 06
CONTENTS:

CONSTRUCTIONAL -

"Fidelity Six". . . . 3

"Mystery Dual-Waver". . . . 17

"Vibra Fidelity Amplifier". . . . 21

"War News Booster Unit". . . . 35

GENERAL TECHNICAL -

"Old Reliable". . . . 9

Set Building as a Hobby. . . . 11

AMPLIFIER SECTION -

Fidelity Amplifier for Country Home. . . . 21

Amplifier Championship. . . . 23

Elimination of Distortion. . . . 27

SHORT-WAVE SECTION -

From Ill-fated Oslo. . . . 14

Hour by Hour Tuning Guide for War News. . . . 24

Review. . . . 29

The Month's Loggings. . . . 30

Short-Wave Tuning Guide. . . . 32

JUNIOR TECHNICAL -

Hints and Tips. . . . 42

Earthing the Receiver. . . . 44

Soldering Practice. . . . 45

TRADE NOTES -

Free Price List. . . . 42

New Radiokes Company. . . . 43

SPEEDY QUERY SERVICE -

Answers to Readers' Problems. . . . 47

1940 07
CONTENTS:

CONSTRUCTIONAL —

"Tip-Top Three-Four Superhet". . . . 5

Standard A.C. Power Unit. . . . 19

Two Novel Circuits From America. . . . 25

GENERAL TECHNICAL —

Battery Chargers. . . . 11

Using An R.F. Oscillator. . . . 15

Rola Introduces "Kappa" Cones. . . . 35

AMPLIFIER SECTION —

Amplifier Championship. . . . 22

SHORT-WAVE SECTION —

Review. . . . 28

The Month's Loggings. . . . 30

JUNIOR TECHNICAL —

Hints and Tips. . . . 37

Building a Galvanometer. . . . 38

TRADE NOTES —

W. G. Watson Release 1940 Test Equipment. . . . 40

Meter Repairs. . . . 40

Free Resistor De-coder. . . . 40

Bargain Lines at Murdock's Radio Sale. . . . 42

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 41

1940 08
CONTENTS:

CONSTRUCTIONAL —

American-Style Communications Nine. . . . 5

Direct-Coupled Circuits. . . . 15

A Novel Power Unit. . . . 20

GENERAL TECHNICAL —

The A.B.C. of Multi-Range Meter Design. . . . 29

Aerials for Better Reception. . . . 38

AMPLIFIER SECTION —

Amplifier Championship. . . . 23

SHORT-WAVE SECTION —

Review. . . . 31

Loggings. . . . 32

Short-wave Broadcast Station List. . . . 34

JUNIOR TECHNICAL —

Hints and Tips. . . . 40

A Simple Electric Motor. . . . 42

J.T. Queries. . . . 43

Cutting Threads with Dies and Taps. . . . 43

TRADE PARADE —

Air Test of Latest Breville Receiver. . . . 19

Bargains from Invincible Radio. . . . 27

Vealls 1940 Catalogue. . . . 27

New Philips Valve Chart. . . . 27

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 45

1940 09
CONTENTS:

CONSTRUCTIONAL —

The Winning Amplifier. . . . 11

American-Style Communications Nine. . . . 15

Star Battery D/W Five. . . . 17

Velco Crystal Set. . . . 41

AMPLIFIER SECTION —

Amplifier Contest. . . . 5

SHORT-WAVE SECTION —

Review. . . . 30

Help Wanted. . . . 31

Loggings. . . . 32

JUNIOR TECHNICAL —

How to Build a Morse Key. . . . 42

J. T. Queries. . . . 43

Random Jottings. . . . 43

TRADE PARADE —

Air Test of New Stromberg-Carlson Portable. . . . 28

Latest Radiola Model No. 282. . . . 38

New Rola 5-9. . . . 40

Free Catalogue From U.R.D. .. . . 40

Morse Sets From John Martin. . . . 40

Radio Book Review. . . . 40

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 45

1940 10
CONTENTS:

CONSTRUCTIONAL —

Reinortz Three. . . . 5

Itsy-Bitsy Mantel Model. . . . 13

Velco Hi-Fidelity Five. . . . 17

TECHNICAL —

Problems With 1.4 Valves. . . . 11

Oscillator Grid Currents. . . . 25

Intermediate Transformers. . . . 27

Don'ts for Battery Charging. . . . 38

SHORT-WAVE SECTION —

Review. . . . 30

Radio Engineer from Japan. . . . 30

The Month's Loggings. . . . 32

TRADE PARADE —

Calstan Portable Reviewed. . . . 28

Ultimate "World-wave" Model. . . . 29

New Trimmers for R.C.S. .. . . 36

Book Reviews. . . . 42

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 41

1940 11
CONTENTS:

CONSTRUCTIONAL —

Trans-Port. . . . 5

Straight Four. . . . 13

All-wave Oscillator. . . . 19

Criterion Crystal Set. . . . 24

TECHNICAL —

Direct-coupled Phase-changers. . . . 9

Further Championship Circuits. . . . 12

How to Use a Morse Key. . . . 25

H.T. from Accumulator. . . . 27

SHORT-WAVE SECTION —

Review. . . . 29

This Month's Loggings. . . . 30

Short-wave Stations of the World. . . . 33

TRADE PARADE —

Mardel Fan. . . . 38

Newcomer to Delta Range. . . . 38

Morse Combination Units. . . . 38

Expansion at John Martin's. . . . 39

New Dials by Radiokes Pty. Ltd. .. . . 39

Transverse Cutting Gear. . . . 39

Power Rheostats by I.R.C. .. . . 39

A.W.A. Modulated Oscillator. . . . 39

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 41

1940 12
CONTENTS:

CONSTRUCTIONAL —

D.W. 13/42. . . . 5

Xmas Portable. . . . 7

Tip Top Superhet. . . . 11

Tone Corrector. . . . 30

TECHNICAL —

Speaker Transformers. . . . 15

Dial Tracking. . . . 16

Loud-Speaker Impedances. . . . 18

SHORT-WAVE SECTION —

Short-wave Review. . . . 20

War News Around the Clock. . . . 22

This Month's Loggings. . . . 24

New Members of All-Wave All-World DX Club. . . . 28

TRADE PARADE —

Raymart Range at John Martin's. . . . 29

Kiddies' Xmas Gifts. . . . 29

Special Service at Davis Radio Co. .. . . 29

"Exporters". . . . 29

City Store's Many Years in Radio. . . . 29

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 33

1941 01
CONTENTS:

CONSTRUCTIONAL —

Countryman's Six. . . . 5

Xmas Portable. . . . 23

Push-Pull Proposition. . . . 43

GENERAL TECHNICAL —

Scott Communications Receiver. . . . 13

How to Use the "Radio World" A. W. Oscillator. . . . 17

An Interesting Circuit from Western Australia. . . . 20

The "Lilley" Amplifier. . . . 29

The 1940 Circuits. . . . 30

Dobson's Amplifier. . . . 41

A Novelty Set. . . . 51

New Laboratory Service. . . . 55

TRADE PARADE —

Latest Kriesler Release. . . . 49

Two Attractive Receivers from S.T.C. .. . . 53

Fan Disc Locking Washers Now Available. . . . 54

City Store's Entry into Manufacturing Trade. . . . 54

Spitfire Dial. . . . 54

New Philips Valve Booklet. . . . 54

SHORT-WAVE SECTION —

Review. . . . 32

Loggings. . . . 35

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 57

1941 02
CONTENTS:

CONSTRUCTIONAL —

The Club Special. . . . 11

Local-Tone Four. . . . 13

The Standard Crystal Set. . . . 30

GENERAL TECHNICAL —

Compensated Acoustics. . . . 5

TRADE PARADE —

Counter Checkers. . . . 29

Two Mullard Portables. . . . 28

Free Foxradio Order Pads. . . . 28

Mullard Valve Chart Reprinted. . . . 28

SHORT-WAVE SECTION —

Loggings. . . . 18

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 33

1941 03
CONTENTS:

CONSTRUCTIONAL —

The Club Special. . . . 5

Acoustic Compensated Superhet. . . . 25

GENERAL TECHNICAL —

Compensated Acoustics. . . . 15

Code Practice Oscillator. . . . 40

Radio Tools. . . . 45

TRADE PARADE —

Radiola Review. . . . 41

New Lines from Levenson's. . . . 42

Parts Required? . . . . 42

Paramount Review. . . . 47

SHORT-WAVE SECTION —

Review. . . . 32

Loggings. . . . 34

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 49

1941 05
CONTENTS:

CONSTRUCTIONAL —

"All-World Two". . . . 5

Code Oscillator for A.C. .. . . 9

Build a "Servi-Meter". . . . 15

Crown "C.R.P." Six. . . . 30

"Porto-Gram" Amplifier. . . . 39

TECHNICAL —

Simple Volume Expansion. . . . 10

Correct Field Excitation. . . . 36

SHORT-WAVE SECTION —

Notes by L. J. Keast. . . . 42

Loggings of the Month. . . . 44

New Stations. . . . 44

New Schedules for London. . . . 47

SERVICEMEN'S SECTION —

Build a "Servi-Meter". . . . 15

Systematic Servicing. . . . 19

New Oscillograph by Paton. . . . 19

Vibrator High-tension Units. . . . 24

Valve Chart Available. . . . 28

Dealer Proposition. . . . 34

Correct Field Excitation. . . . 36

Alignment of Permotune Units. . . . 37

Trade Parade. . . . 49

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 50

1941 07
CONTENTS:

CONSTRUCTIONAL —

"Vibra 4" for Countryman. . . . 5

5-Band Modulated Oscillator. . . . 11

Thirteen-watt Amplifier. . . . 15

Power Oscillator. . . . 29

TECHNICAL —

How to Use an Oscillator. . . . 32

Modern Sound for Modern Hotels. . . . 33

Speedy Query Service. . . . 34

SHORT-WAVE SECTIONS —

Conditions Affecting Reception. . . . 20

Short-wave Review. . . . 23

Loggings of the Month. . . . 24

1941 08
CONTENTS:

CONSTRUCTIONAL —

"Trade Builder Five" Mantel Model. . . . 5

All-wave One-valve Receiver. . . . 19

The Crystal Circuit to End All Crystal Circuits. . . . 32

Amplifier for Fidelity at Low Volumes. . . . 19

Pre-amplifier Circuit for Microphones. . . . 31

TECHNICAL —

Curing Instability in Modern Superheterodynes. . . . 15

Attaining High Speed at the Morse Code. . . . 13

What Is "Radio Location"? . . . . 30

Free Technical Data Chart Offer. . . . 38

Analysing Push-pull Output Circuits. . . . 33

SHORT-WAVE SECTION —

Loggings of the Month. . . . 24

Short-wave Review. . . . 22

New Members of the DX Club. . . . 34

TRADE SECTION —

New "Westex" Cabinets. . . . 35

Philips' 50 Years of Progress. . . . 35

Mullard Mantel Models Reviewed. . . . 29

Ultimate Catalogue Issued. . . . 37

1941 09
CONTENTS:

CONSTRUCTIONAL —

Signal Tracer for Servicemen. . . . 5

Simplest Five-Valver. . . . 11

"Vibra Four" as "Trade Builder". . . . 29

TECHNICAL —

Balance Conditions in Push-pull Output. . . . 30

Technical Queries. . . . 38

SHORT-WAVE SECTION —

Questions They Ask the B.B.C. .. . . 17

Short-wave Review. . . . 22

Logging of the Month. . . . 24

1941 10
CONTENTS:

CONSTRUCTIONAL —

1941 "Dandy". . . . 7

Radiotronics Tone-Control Amplifier. . . . 13

Five-way Tone-Control Switch. . . . 30

TECHNICAL —

Battery Circuit Contest. . . . 5

Stability by Neutralisation. . . . 6

A Technical Explanation of Loading. . . . 9

A Fidelity Circuit from U.S.A. .. . . 10

Technical Queries. . . . 33

SHORT-WAVE SECTION —

Short-wave Review. . . . 18

Loggings of the Month. . . . 20

1941 11
CONTENTS:

CONSTRUCTIONAL —

Inter-office Communicator. . . . 5

Dual-wave Vibrator Set. . . . 7

"Nugget" Dual-waver. . . . 11

Handy 12-watt Amplifier. . . . 11

Elementary Signal Tracer. . . . 19

TECHNICAL —

Interesting Experiments with Amplifiers. . . . 21

How to Use Your Oscilloscope. . . . 23

Beat Frequency Oscillator. . . . 26

Answers to Queries. . . . 37

SHORT-WAVE SECTION —

Why They Change the B.B.C. Wavelengths. . . . 20

Notes from My Diary, by L. J. Keast. . . . 28

Loggings of the Month. . . . 30

Battery Circuit Contest Coupon. . . . 37

1941 12
CONTENTS:

CONSTRUCTIONAL —

Acoustic Compensated Superhet. . . . 5

"My Own" Fidelity Receiver for Locals. . . . 11

A Medium-cost Signal Tracer. . . . 17

1942 Version of "Tip-Top". . . . 21

TECHNICAL —

Powerful Battery Set Circuit. . . . 15

The Meaning of Condenser Ratings. . . . 27

Answers to Queries. . . . 41

SHORT-WAVE SECTION —

Notes from My Diary, by L. J. Keast. . . . 30

Loggings of the Month. . . . 32

New Stations. . . . 36

TRADE NEWS —

Rothermel-Brush Pickups. . . . 24

New Amplion Speaker. . . . 14

1942 01
CONTENTS:

CONSTRUCTIONAL -

Signal Tracer for Battery Operation. . . . 13

Countryman's Seven-valve Dual-waver. . . . 23

A Portable Battery Circuit. . . . 9

Renovating Radio Cabinets. . . . 10

TECHNICAL -

Direct-coupled Phase-changers. . . . 5

Five-way Tone Control. . . . 12

Fundamentals of the C.R.O. .. . . 15

Some Battery Set Considerations. . . . 20

SHORT-WAVE SECTION -

Notes from My Diary. . . . 24

Loggings of the Month. . . . 26

New Stations Heard. . . . 25

THE SERVICE PAGE -

Answers to Queries. . . . 34

Battery Circuit Contest Results. . . . 11

1942 02
CONTENTS:

CONSTRUCTIONAL -

Tried and Tested One-valver. . . . 5

Detector Unit for Amplifiers. . . . 17

Re-building Radio Batteries. . . . 19

Alternative Bias Amplifier. . . . 21

TECHNICAL -

Victorian Champion Amplifier. . . . 9

Two Effective Battery Circuits. . . . 11

Baffling the Loud-speaker. . . . 14

Crystals for Frequency Control. . . . 16

The Reduction of Harmonic Distortion. . . . 22

SHORT-WAVE SECTION -

Short-wave Review. . . . 24

Tokyo's Broadcast Propaganda. . . . 25

The Month's Loggings. . . . 26

New Stations. . . . 26

Latest Loggings. . . . 28

THE SERVICE PAGE -

Wanted - Old Transmitting Valves. . . . 18

Answers to Queries. . . . 30

1942 03
CONTENTS:

CONSTRUCTIONAL -

"Little Companion". . . . 5

TECHNICAL -

Economy in Amplifier Design. . . . 13

Copper Wire Production. . . . 14

Harmonics in Reproduction. . . . 15

SHORT-WAVE SECTION -

Breaking into DX. . . . 22

Short-wave Review. . . . 24

New Stations. . . . 25

Loggings of the Month. . . . 26

THE SERVICE PAGES -

Guide to Back Numbers. . . . 18

Answers. . . . 30

1942 04
CONTENTS:

CONSTRUCTIONAL -

The Latest Signal Tracer. . . . 5

High Fidelity Amplifier. . . . 11

TECHNICAL -

Test Bench Arrangement. . . . 16

"Radio Step by Step"- Part 1. . . . 18

SHORT-WAVE SECTION -

Contempt for Tokyo Propaganda. . . . 17

Short-wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 05
CONTENTS:

CONSTRUCTIONAL -

Adding A.V.C. to "Little Companion". . . . 5

TECHNICAL -

Strange Theories and Facts. . . . 6

The Alignment of Modern Receivers. . . . 10

Radio Step By Step (Part 2). . . . 15

The Triplex Single. . . . 18

SHORT-WAVE SECTION -

Short-Wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 06
CONTENTS:

CONSTRUCTIONAL -

Circuit for a Two-valve Portable Set. . . . 15

Simple Set Testing without Meters. . . . 18

TECHNICAL -

Tone Compensation for Scale Distortion. . . . 5

The Construction and Operation of Meters. . . . 7

A Battery Quiz. . . . 9

Technical Press does a Vital Job. . . . 11

Dealing with the Problem of Instability. . . . 12

A Radio Crossword Puzzle. . . . 14

Radio Step by Step (Part 3). . . . 16

SHORT-WAVE SECTION -

Short-wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 07
CONTENTS:

CONSTRUCTIONAL -

Interesting Circuit Suggestions. . . . 15

Wave Trap to Improve Sensitivity. . . . 18

TECHNICAL -

About Screws and Screw-Threads. . . . 5

Radio Step by Step - Part 4. . . . . 7

Modern Set Building Methods. . . . 9

SHORT-WAVE SECTION -

Short-wave Review. . . . 19

Loggings of the Month. . . . 19

New Stations. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 08
CONTENTS:

CONSTRUCTIONAL -

A New Version of "Little Companion". . . . 5

Making Most of the Milliammeter. . . . 9

TECHNICAL -

Why no Technical Radio in Programmes? . . . . 6

A New Light Source. . . . 14

Some Notes on Servicing Vibrator Sets. . . . 15

Radio Step by Step - Part 5. . . . 18

Parts of Maintenance of Receivers. . . . 24

SHORT-WAVE SECTION -

Short-Wave Review. . . . 20

Loggings of the Month. . . . 22

New Stations. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1942 09
CONTENTS:

CONSTRUCTIONAL -

The "Victory Set". . . . 5

How to Make a Metal Chassis. . . . 16

TECHNICAL -

Great News for Enthusiasts. . . . 11

Fresh Ideas in Circuits - No. 3. . . . 12

Radio Step by Step - Part 6. . . . 15

Points About Aerial Efficiency. . . . 24

SHORT-WAVE SECTION -

Short-Wave Review. . . . 18

Loggings of the Month. . . . 20

Stop Press. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 10
CONTENTS:

CONSTRUCTIONAL -

Victory Mantel Model. . . . 5

TECHNICAL -

Forming the Amplifier Circle. . . . 7

Simple Hi-Fi Circuit. . . . 9

Carrier-Current Experiments. . . . 13

Radio Step by Step - Part 7. . . . 17

Origin of the Oscillograph. . . . 19

SHORT-WAVE SECTION -

Short-Wave Review. . . . 20

New Stations. . . . 20

Loggings of the Month. . . . 22

SERVICE PAGES -

Answers. . . . 26

1942 11
CONTENTS:

CONSTRUCTIONAL -

Super Quality Dual-Wave Design. . . . 7

TECHNICAL -

Little Known Industrial Equipment. . . . 5

The Weak Links in Reproduction. . . . 9

Handy Feedback System. . . . 11

Better Detection for the T.R.F. .. . . 13

Further Circuit Suggestions. . . . 14

Tolerances in Set Design. . . . 15

Radio Step by Step - Part 8. . . . 18

SHORT-WAVE SECTION -

Short-wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 12
CONTENTS:

CONSTRUCTIONAL -

Inter. Switch for Fidelity. . . . 5

TECHNICAL -

Interesting Ideas in Circuits. . . . 9

Added Range for Battery Sets. . . . 11

A Dictionary of Radio Terms. . . . 13

Radio in Development of Air Transport. . . . 17

Radio Step by Step - Part 9. . . . 18

SHORT-WAVE SECTION -

Aussie News for U.S. Listeners. . . . 7

Short-Wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

New Prices for Rola Speakers and Repairs. . . . 16

Answers. . . . 26

1943 01
CONTENTS:

CONSTRUCTIONAL -

Standard 4-Watt Amplifier. . . . 5

TECHNICAL -

Interesting Ideas in Circuits. . . . 7

Modern Gramophone Pick-ups. . . . 9

Substitute Valve Arrangements. . . . 11

Evolution of the Detector. . . . 13

Another Quality Set Design. . . . 14

A Dictionary of Radio Terms. . . . 16

Radio Step by Step - Part 10. . . . 20

The "Magneto" Spacelicker. . . . 23

SHORT-WAVE SECTION -

Short-Wave Review. . . . 21

New Stations. . . . 22

Loggings of the Month. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 02
CONTENTS:

CONSTRUCTIONAL -

A De Luxe Signal Tracer. . . . 5

Power for the Battery Amplifier. . . . 9

S.W. Converter for Battery Sets. . . . 15

TECHNICAL -

Ideas in Circuits. . . . 11

Evolution of the Tuning Condenser. . . . 13

Substitute Valves - Part 2. . . . 16

Radio Step · by Step - Part 11. . . . 17

Resistor and Condenser Boxes. . . . 18

Selections of Crystals for Crystal Sets. . . . 19

SHORT-WAVE SECTION -

Co-Prosperity in Formosa and Korea. . . . 20

Short-Wave Review. . . . 21

New Stations. . . . 23

Loggings of the Month. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 03
CONTENTS:

CONSTRUCTIONAL -

High Tension for Battery Sets. . . . 13

TECHNICAL -

Pentodes for Power ... But Triodes for Tone. . . . 6

Hints for Better Soldering. . . . 10

Evolution of the Loudspeaker. . . . 11

Radio Step by Step - Part 12. . . . 17

Ideas for Modern Circuits. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 22

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1943 04
CONTENTS:

CONSTRUCTIONAL -

The "S.R.L. Special" Amplifier. . . . 5

TECHNICAL -

Audio Frequency Coupling Methods. . . . 7

Ideas in Circuit Design. . . . 10

Gremlins Now Troubling Radio. . . . 12

Evolution of the Radio Valve. . . . 13

Are Deaf Aids Radio Business? . . . . 15

Can There be Radio to the Planets? . . . . 18

Radio Step by Step - Part 13. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 22

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1943 05
CONTENTS:

CONSTRUCTIONAL -

Novel Designs for Amplifier. . . . 5

Receiver Using Junk Parts. . . . 11

TECHNICAL -

Radio Frequency Coupling Methods. . . . 7

Television Tubes. . . . 9

Army Instruction "A La Yank!" . . . . 12

Ideas for Modern Circuits. . . . 13

Modified Views on Short-Wave Propagation. . . . 14

Evolution of the Tuning Coil. . . . 17

Radio Step by Step - Part 14. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 22

Allied and Neutral Countries Shortwave Schedule. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1943 06
CONTENTS:

CONSTRUCTIONAL -

Simple Battery Set. . . . 9

TECHNICAL -

Electronics in Medicine. . . . 5

Ideas from Modern Circuits. . . . 11

Television or Facsimile. . . . 13

Substitute Output Valves. . . . 14

Radio Step by Step. . . . 20

SHORT-WAVE SECTION -

Short-wave Review. . . . 21

New Stations. . . . 21

Notes and Observations. . . . 22

Allied and Neutral Countries Short-wave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 07
CONTENTS:

CONSTRUCTIONAL -

Power Amplifier for Batteries. . . . 5

T.R.F. for Local Hi-Fi. . . . 7

Forty-Watt Amplifier. . . . 11

Battery Charger from Speaker Parts. . . . 13

Design for Transposed Aerials. . . . 15

TECHNICAL -

With Radiomen of the Air Force. . . . 6

Television. . . . 9

The Effects of Load Impedance. . . . 17

SHORT-WAVE SECTION -

Short-wave Review. . . . 21

Notes and Observations. . . . 22

New Stations. . . . 23

Allied and Neutral Countries Short-wave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 08
CONTENTS:

CONSTRUCTIONAL -

Design for 20-Watt Amplifier. . . . 5

Test Panel for Vibrator Testing. . . . 7

TECHNICAL -

Common Errors of Amplifier Practice. . . . 11

The Measurement of Resistance. . . . 15

Headphones for Quality Reproduction. . . . 17

Radio Step by Step. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 21

Notes and Observations. . . . 22

New Stations. . . . 23

Allied and Neutral Countries Shortwave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 09
CONTENTS:

CONSTRUCTIONAL -

Design for Post-War Receiver. . . . 9

Simple Wheatstone Bridge. . . . 15

Super Space-Licker Two. . . . 19

TECHNICAL -

Electronics in Medicine. . . . 5

Full Story of Inverse Feedback. . . . 10

The Story of the Electrolytic Condenser. . . . 17

Resistors - Resistance. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

New Stations. . . . 22

Allied and Neutral Countries Shortwave Schedules. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1943 10
CONTENTS:

CONSTRUCTIONAL -

Design for a Simple A.C. Bridge. . . . 5

A Receiver Circuit for Utopia. . . . 9

Building a High-Grade Audio Transformer. . . . 15

TECHNICAL -

History of the Cathode Ray Oscilloscope. . . . 7

Revivals in Radio Practice. . . . 13

Servicing Suggestions for A.C.-D.C. Sets. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

Allied and Neutral Countries Shortwave Schedules. . . . 23

New Stations. . . . 25

THE SERVICE PAGES -

Answers. . . . 26

1943 11
CONTENTS:

CONSTRUCTIONAL -

Receiver to Operate from 32-Volts. . . . 7

TECHNICAL -

Servicemen get Radio Parts Priority. . . . 5

Future Applications of Frequency Modulation. . . . 9

Design of Screening for Receivers. . . . 11

Are Multiple Valves a Good Proposition? . . . . 13

The Limits to Audio Amplification. . . . 15

The Construction and Amplification of Pick-ups. . . . 16

Speaker Location for High-Power Amplifiers. . . . 18

Common Errors of Radio Testing. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

New Stations. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1943 12
CONTENTS:

CONSTRUCTIONAL -

Five-Way Tone Controls. . . . 9

New Design for Folded Horn. . . . 15

TECHNICAL -

Electronics in Industry. . . . 5

Operation of Output Valves. . . . 11

Guide to Back Numbers. . . . 13

High Efficiency Aerial for Shortwaves. . . . 17

Speaker Location for High-Powered Amplifiers. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

New Stations. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1944 01
CONTENTS:

CONSTRUCTIONAL -

Simple Vacuum Tube Voltmeter. . . . 5

Hi-Fi Gramophone Pick-up. . . . 9

N.Z. All-Wave Two. . . . 13

Ribbon-Type Microphone. . . . 17

TECHNICAL -

Measurement of Inductance. . . . 7

Radio Nails for Plywood. . . . 14

Band Pass and Pre-selector Unit. . . . 15

Review of "Radio World". . . . 19

SHORTWAVE SECTION -

Short-wave Review. . . . 20

Short-wave Notes and Observations. . . . 21

New Stations. . . . 20

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 02
CONTENTS:

CONSTRUCTIONAL -

What is the Most Suitable Circuit for Utility Receiver? . . . . 7

Make Your Own Soldering Iron. . . . 11

TECHNICAL -

The History of Piezo Crystals. . . . 5

The Case for the Single Ender. . . . 9

Some Thoughts on Post-War Radio. . . . 13

Super Quality Amplifier Design. . . . 15

Proper Operating Conditions for Valves. . . . 16

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Shortwave Notes and Observations. . . . 21

New Stations. . . . 22

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 03
CONTENTS:

CONSTRUCTIONAL -

Design for Utility Circuit. . . . 6

The Three-Two Special. . . . 19

TECHNICAL -

What is the Future of Walkie-Talkie? . . . . 5

A Hundred Million Volts! . . . . 9

Radio in the Newspaper Headings. . . . 10

Electronics in Modern Music. . . . 11

Proper Methods of Using Valves. . . . 13

Technical Ideas from the Talkies. . . . 17

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Shortwave Notes and Observations. . . . 21

New Stations. . . . 20

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 04
CONTENTS:

CONSTRUCTIONAL -

Standard Features for Utility. . . . 6

Avoiding the H.T. Transformer. . . . 7

Electronics in Modern Music. . . . 9

"Mystery" Crystal Set. . . . 17

TECHNICAL -

Ideals in DX Sets. . . . 5

Simple Volume Expander Circuit. . . . 11

Reviving Dry Batteries Electrically. . . . 13

Pentodes and Similar Power Valves. . . . 14

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 20

Shortwave Notes and Observations. . . . 21

Loggings. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 05
CONTENTS:

CONSTRUCTIONAL -

Novel Detector in Contest Entry. . . . 6

An Amplifier Beyond Reproach? . . . . 11

TECHNICAL -

The Tropic-Proofing Era. . . . 5

A Serviceman's Lament. . . . 7

The Multi-Vibrator and its Uses. . . . 9

Radio Aids to U.S. Navigation. . . . 12

Technical Data on Valve Cathodes. . . . 14

Radio Heating is a Modern Wonder. . . . 17

Wider Tone Control. . . . 18

Serviceman Licences Issued. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 20

Shortwave Notes and Observations. . . . 21

Loggings. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 06
CONTENTS:

CONSTRUCTIONAL -

Utility Battery-Operated Set. . . . 6

A Long-Range Utility Receiver. . . . 8

Direct-Coupled Utility Design. . . . 10

TECHNICAL -

Details of Victorian Amplifier Contest. . . . 5

Some New Ideas from Modern Circuits. . . . 11

Output Transformer Construction. . . . 13

Adjustable I.F. Selectivity. . . . 16

A.B.C. of Frequency Modulation. . . . 19

U.S. Claims Invention of Radar. . . . 20

Signal Officers in the Making. . . . 21

SHORTWAVE REVIEW -

Notes From My Diary. . . . 23

New Stations. . . . 23

Shortwave Notes and Observations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 07
CONTENTS:

CONSTRUCTIONAL -

Simple Vacuum Voltmeter. . . . 7

Home Built Communications Set. . . . 14

TECHNICAL -

R.A.A.F. Jungle Broadcaster. . . . 5

Winning Essay. . . . 8

Design Considerations for Amplifiers. . . . 10

Finer Points About Pick-ups. . . . 19

Distortion - Its Cause and Cure. . . . 20

SHORTWAVE REVIEW -

Notes From My Diary. . . . 23

New Stations. . . . 23

Short Wave Notes and Observations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 08
CONTENTS:

CONSTRUCTIONAL -

Home-Made Hi-Fi Pick-up. . . . 5

Wide Range Audio Frequency Oscillator. . . . 7

A Useful A.C. Bridge Circuit. . . . 13

V.T. Voltmeter for Audio Work. . . . 18

TECHNICAL -

The Accuracy of Ohmmeters. . . . 9

Screening by Metal Spray. . . . 11

Frequency-Controlling Crystals. . . . 17

Bass Booster for Amplifiers. . . . 19

SHORTWAVE REVIEW -

Notes From My Diary. . . . 20

New Stations. . . . 20

Shortwave Notes and Observations. . . . 21

Shortwave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 09
CONTENTS:

CONSTRUCTIONAL -

The "Ferrier" Super Crystal Receiver. . . . 10

A Non-Microphonic Volume-Expander Circuit. . . . 13

Simple and Effective Valve Tester. . . . 15

TECHNICAL -

N.Z. Radiomen to go to Britain. . . . 5

The Design of Direct-Coupled Amplifiers. . . . 6

Eclipse Staff Holds Amplifier Contest. . . . 11

A Buzzer Makes an Handy Multivibrator. . . . 12

Radio Frequency for Industrial Heating. . . . 16

SHORTWAVE REVIEW -

Notes From My Diary. . . . 23

New Stations. . . . 23

Shortwave Notes and Observations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 10
CONTENTS:

CONSTRUCTIONAL -

Something Fresh in Amplifiers. . . . 5

"Novochord" is Electronic Piano. . . . 7

Pick-Up Principles and Practice. . . . 13

Cathode-Follower Amplifier Design. . . . 16

Inductance and Capacity Meter. . . . 17

TECHNICAL -

Cathode Follower Output Stage. . . . 11

Iconoscope - The Electron "Gun". . . . 21

SHORTWAVE REVIEW -

Notes of My Diary. . . . 23

Shortwave Notes and Observations. . . . 24

New Stations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 11
CONTENTS:

CONSTRUCTIONAL -

Repairing and Adjusting Vibrators. . . . 22

A Receiver Without Gang. . . . 23

Alignment by Wobbler. . . . 9

Pick-up Principles and Practice. . . . 11

TECHNICAL -

Mutton Good at Amplifiers. . . . 5

Possibilities of Frequency Modulation. . . . 7

Curves - Straight or Bent. . . . 13

Valves in Theory and Practice. . . . 16

Research Into Phase-Changers. . . . 21

The Future for Recordings. . . . 24

SHORTWAVE REVIEW -

Notes from My Diary. . . . 27

New Stations. . . . 27

Shortwave Notes and Observations. . . . 28

Loggings. . . . 31

THE SERVICE PAGES -

Answers. . . . 33

1944 12
CONTENTS:

CONSTRUCTIONAL -

Contest Was Keen. . . . 5

Pick-up Principles. . . . 13

Victorian Championship. . . . 17

TECHNICAL -

Aesthetics of Reproduction. . . . 19

Music While You Work. . . . 26

SHORTWAVE REVIEW -

Shortwave Notes and Observations. . . . 29

Notes From My Diary. . . . 31

New Stations. . . . 33

THE SERVICE PAGES -

Answers. . . . 34

1945 01
CONTENTS

CONSTRUCTIONAL —

Power Transformers. . . . 5

TECHNICAL —

Tales of Phase Inverters. . . . 11

In Defence of "A504". . . . 13

The Telechrome. . . . 17

Factors in High Fidelity. . . . 19

Acoustic Typewriters. . . . 25

SHORTWAVE REVIEW —

The Month's Loggings. . . . 29

Notes From My Diary. . . . 32

New Stations. . . . 31

THE SERVICE PAGES —

Answers. . . . 34

1945 02
CONTENTS

CONSTRUCTIONAL —

An Alternating Design. . . . 5

Make Your Own Selenium Cell. . . . 17

TECHNICAL —

Square Wave Testing. . . . 11

Aesthetics of Reproduction. . . . 14

Filing Your Resistances. . . . 15

A Short Course in Radio Fundamentals. . . . 20

Voltage Doubling. . . . 25

The Miller Effect. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1945 03
CONTENTS

CONSTRUCTIONAL —

A Circuit of D.C. Power. . . . 5

Reflex for Results. . . . 11

A Handy Tester Design. . . . 13

TECHNICAL —

Practical Aspects of High Fidelity. . . . 6

A Short Course in Radio Fundamentals — Part 2. . . . 14

The Amplifier Competition. . . . 18

Cathode Ray Tubes. . . . 19

Moving Coil Meters. . . . 25

Post-War Receiver Features. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

The Service Pages —

The Service Pages. . . . 34

1945 04
CONTENTS

CONSTRUCTIONAL —

Balanced Linear V.T.V.M. .. . . 5

TECHNICAL —

Continental Design. . . . 11

Contrast Without Distortion. . . . 15

Aegis Components Do War Job. . . . 17

A Short Course In Radio Fundamentals - Part 3. . . . 18

Technical Review from U.S.A. .. . . 25

Production of Audio Frequencies. .. . . . . .. .. . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

The Service Pages —

The Service Pages. . . . 34

1945 05
CONTENTS

CONSTRUCTIONAL —

An Improved Reflex Circuit. . . . 7

One-valve Test Oscillator. . . . 9

A Sound Design for an Audio Oscillator. . . . 13

TECHNICAL —

Tolerance in Set Design. . . . 5

A High-Fidelity Hint. . . . 11

Building the A.I.F. Broadcaster. . . . 12

A Short Course in Radio Fundamentals — Part 4. . . . 16

New Dutch Valves. . . . 22

SHORTWAVE REVIEW —

Notes From My Diary. . . . 23

New Stations. . . . 24

Loggings and Changes. . . . 25

THE SERVICE PAGES —

The Service Pages. . . . 26

1945 06
CONTENTS

CONSTRUCTIONAL —

A Well-tried Reflex Circuit. . . . 20

TECHNICAL —

Radio Location - War-winner. . . . 5

Walkie-Talkies in Peace. . . . 11

Wireless Rules the Waves. . . . 13

A Short Course in Radio Fundamentals - Part 5. . . . 16

Fragmentary Crystals. . . . 19

History and Theory of Microphones. . . . 21

Another Hint for High Fidelity. . . . 24

Latest Technical Notes from New York. . . . 25

SHORTWAVE REVIEW —

Notes From My Diary. . . . 26

New Stations. . . . 27

Loggings. . . . 28

THE SERVICE PAGES —

Answers. . . . 30

1945 07
CONTENTS

CONSTRUCTIONAL —

Wide Range Resistance and Capacity Meter. . . . 9

Tone Compensation Amplifier. . . . 20

TECHNICAL —

Radio in America. . . . 5

Theory of Oscillation. . . . 17

Power Supply Filters. . . . 24

Straede's Amplifier Contest. . . . 24

A Short Course in Radio Fundamentals. . . . 26

Latest Technical Notes from New York. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 08
CONTENTS

CONSTRUCTIONAL —

Making Paper Condensers. . . . 11

Small Hints for Big Effects. . . . 15

TECHNICAL —

Radio for Model Planes. . . . 5

Eliminating Hum. . . . 6

Trade With America. . . . 7

A Short Course in Radio Fundamentals. . . . 18

Decibel — a Logarithmic Function. . . . 22

The Theory Behind Proper Amplifier Design. . . . 26

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 32

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 09
CONTENTS

CONSTRUCTIONAL —

A Camera Case Portable. . . . 15

Getting the Best from a Pick-up. . . . 17

TECHNICAL —

An Answer to the Cathode Follower. . . . 11

Theory Behind Proper Amplifier Design — Part 2. . . . 18

Probe Adapter for the V.T.V.M. .. . . 24

Future Appreciations of Radio. . . . 28

Starting in the Radio Business. . . . 5

Standard Valve Types for 1945. . . . 7

Victorian Amplifier Contest. . . . 7

SHORTWAVE REVIEW —

Notes from My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 10
CONTENTS

TECHNICAL —

Our Future Policy. . . . 5

Honour Roll. . . . 7

Amateur Radio. . . . 9

The Transitron Oscillator. . . . 11

Vibrating Power Supplies. . . . 17

Radar's Work With the Navy. . . . 21

The Theory Behind Proper Amplifier Design. . . . 24

SHORTWAVE SECTION —

Notes From My Diary. . . . 30

The Month's Loggings. . . . 32

New Stations. . . . 33

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 11
CONTENTS

CONSTRUCTIONAL —

Stereophonic Amplifier. . . . 7

An Electric Filter. . . . 11

"Aegis" Little Companion Mantel Model. . . . 15

TECHNICAL —

Victorian Amplifier Contest. . . . 5

Television on Rental Basis. . . . 26

Ham Notes — Calling CQ! . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1945 12
CONTENTS

CONSTRUCTIONAL —

The "Lamb" Noise Suppressor. . . . 17

TECHNICAL —

Electro Dynamics Are Obsolete. . . . 5

The Hammond Electric Organ. . . . 6

Hints About Using A.V.C. .. . . 11

Mutton the Winner. . . . 15

Panoramic Reception. . . . 27

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes from My Diary. . . . 30

New Stations. . . . 31

THE SERVICE PAGES —

Answers. . . . 34

1946 01
CONSTRUCTIONAL —

The Champion Amplifier. . . . 5

Simple Service Oscillator. . . . 7

Home Made Filter Chokes. . . . 17

TECHNICAL —

Cathode Follower Tests. . . . 13

Trends in Set Design. . . . 21

U.S. Radio Newsletter. . . . 22

Principles of Radar. . . . 23

Duplex Speakers for Fidelity. . . . 25

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 33

THE SERVICE PAGES —

Answers. . . . 34

1946 02
CONSTRUCTIONAL —

Circuits — The Sober way. . . . 7

Improving DX Performance. . . . 13

TECHNICAL —

New "Ham" Technique. . . . 5

"Wireless Set Number Ten". . . . 14

Signal Tracer in Miniature. . . . 15

How Radio Signals are Broadcast. . . . 17

The Growth of the Radar Chain. . . . 23

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1946 03
CONSTRUCTIONAL —

The "VK2NO — V6". . . . 5

TECHNICAL —

Using the "1852". . . . 13

1852 Characteristics. . . . 14

Using Available Gangs. . . . 19

New Permag Speakers. . . . 23

Radio Trade Notes. . . . 25

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1946 04
CONSTRUCTIONAL —

50-Watt Phone Transmitter. . . . 19

TECHNICAL —

Efficient Aerials for VHF. . . . 5

Improved Modulation Oscillator. . . . 7

Long Range Two Valver. . . . 9

Polysterene for Amateurs. . . . 11

My Own. . . . 15

The Proximity Radio Fuse. . . . 17

Crystals Will Not Amplify. . . . 21

30-Watt Modulation for Hams. . . . 23

Dismal Future for Radio Trade. . . . 25

Ham Notes. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1946 05
CONSTRUCTIONAL —

Metropolis Four. . . . 23

The "Ferrotune" Superheterodyne. . . . 37

TECHNICAL —

What of the Future of "Ham Radio"? . . . . 5

Simple Impedance Measurements. . . . 9

The Channel Analyser. . . . 15

Loud Speaker Baffling Systems. . . . 31

A Decade of Good Battery Circuits. . . . 34

Reception Experiments. . . . 40

Ham Notes. . . . 41

PERSONAL —

Pages. . . . 5, 7, 11, 17, 20, 21, 33, 49

SHORTWAVE REVIEW —

Notes From My Diary. . . . 45

New Stations. . . . 46

Loggings. . . . 47

THE SERVICE PAGES —

Answers. . . . 50

1946 06
CONSTRUCTIONAL —

Receiving Beam for "Ten". . . . 7

TECHNICAL —

Post-war American Receiver. . . . 5

Improved Signal Tracer. . . . 6

Exciter Unit for 50 Mc. . . . . 11

Remarkable Possibilities in 2 Mc. I.F. .. . . 15

Do You Want to be a Ham? . . . . 18

Is That Your Bid? . . . . 20

Understand Valve Curves. . . . 21

More About the Hammond Organ. . . . 28

Experiences with Noise Suppression. . . . 29

Ham Notes. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1946 07
CONSTRUCTIONAL —

The Latest in Direct Coupling. . . . 7

"The Spotter". . . . 11

Powerful 8-Valve Circuit. . . . 17

An Ideal Single-Ender. . . . 21

TECHNICAL —

Advantages of Ferrotune. . . . 5

Politics of Ham Radio. . . . 15

Servicing A.C. Receivers. . . . 20

Estimating Receiver Performance. . . . 23

Operating the 807. . . . 27

Ham Notes. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 39

THE SERVICE PAGES —

Answers. . . . 42

1946 08
CONSTRUCTIONAL —

A Handy Multi-Meter Kit. . . . 7

"All-Wave" Band Spread Two. . . . 13

The "Ferrotune" Reinartz. . . . 17

Sky-Cruiser Battery Four. . . . 21

The Fidelity Broadcast. . . . 25

TECHNICAL —

Outlook for "Ham" Market. . . . 5

Make Your Own "Stroboscope". . . . 15

Getting Started at Set-Building. . . . 29

Ham Notes - Calling CQ. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

New Stations. . . . 39

THE SERVICE PAGES —

Answers. . . . 42

1946 09
CONSTRUCTIONAL —

A Band Checker. . . . 5

A Regenerative Pre-Selector Unit. . . . 9

The "Sky-Hawk Four". . . . 29

TECHNICAL —

A Effective Noise Limiter. . . . 11

More About Ham Politics. . . . 13

Getting Started at Set Building (Part 2). . . . 15

The Connoisseur. . . . 19

The Importance of Lay Out. . . . 27

Fault Finding by Substitutions. . . . 28

Ham Notes. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 40

THE SERVICE PAGES —

Speedy Queries. . . . 42

1946 10
CONSTRUCTIONAL —

A Practical Circuit. . . . 7

An A.C. Bridge. . . . 21

TECHNICAL —

"Sparks" as a Career. . . . 5

Technical Notes From Up North. . . . 11

Problems of Commercial Design. . . . 15

Dealing With Man-Made Static. . . . 25

Ham Papers. . . . 29

Calling CQ. . . . 31

Doings on "One-and-Threequarters". . . . 33

DX Possible on "Six". . . . 34

Bargains - and Where Encountered. . . . 35

Around the Six Metre Band. . . . 36

Night Flying in Daylight. . . . 37

SHORTWAVE REYIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 39

THE SERVICE PAGES —

Answers. . . . 42

1946 11
CONSTRUCTIONAL —

"Ferrotune" Mantel Model. . . . 15

TECHNICAL —

A Really Good Amplifier. . . . 5

More Restrictions for Amateurs. . . . 7

A New Home for "Radio World". . . . 9

Circuit for A.C. or Battery. . . . 11

Technical Radio in S. America. . . . 13

A Full Frequency Range Amplifier. . . . 18

To Deliver Forty Five Watts. . . . 19

Some Notes on the Care of Batteries. . . . 28

Calling CQ. . . . 31

SHORTWAVE REVIEW —

Notes for My Diary. . . . 38

Shortwave Schedules. . . . 40

THE SERVICE PAGES —

Answers. . . . 42

1946 12
CONSTRUCTIONAL —

High Quality Multimeter. . . . 5

Build Yourself an F.F.R. Amplifier. . . . 15

TECHNICAL —

Cracking the Oyster. . . . 11

Radiotron Applications Laboratory. . . . 26

Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

THE SERVICE PAGES —

Answers. . . . 34

1947 01
CONTENTS

TECHNICAL —

Designing Battery Receivers. . . . 5

The Control of Tone. . . . 13

The Choice of I.F. Frequencies. . . . 19

Calling CQ. . . . 21

Further Restrictions for Hams. . . . 11

Australian Broadcasting Stations. . . . 26

SHORTWAVE REVIEW —

Notes from My Dairy. . . . 30

THE SERVICE PAGES —

Answers. . . . 34

1947 02
CONTENTS

TECHNICAL —

Trends in Design. . . . 5

High-Fidelity Pick-ups from England. . . . 9

The "F.F.R." 45-watt Amplifier. . . . 15

Two more "Connoisseur" Sets. . . . 21

Re-vamping the "F.S.6". . . . 27

Calling CQ. . . . 33

SHORTWAVE REVIEW —

Notes from My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 03
CONTENTS

TECHNICAL —

Another Type of Beam Array. . . . 5

Electric-Acoustic Coupling. . . . 7

Quick Systematic Testing. . . . 13

Sensitive Four-Valve Circuit. . . . 17

Radio Frequency Chokes. . . . 27

The Truth About Television. . . . 30

SHORTWAVE REVIEW —

Notes from My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 04
CONTENTS

TECHNICAL —

Medical and Biological. . . . 7

Trends in Pick-up Developments. . . . 13

Easy Reflex Circuits. . . . 14

Visual Tuning Indicators. . . . 17

Printed Wiring Methods. . . . 29

A Relay from an old A.F. Transformer. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 05
CONTENTS

TECHNICAL —

Problems of Trade Discount. . . . 5

Double Superhet for Ham Use. . . . 9

Preamplifiers for Talkie Work. . . . 11

Starting a Radio Business. . . . 13

Visual Tuning Indicators. . . . 16

Photo-Electric Cells. . . . 24

Disposal Bargains — And Otherwise. . . . 26

Service Problems in U.S.A. .. . . 30

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 06
CONTENTS

TECHNICAL —

The "Six-Ten". . . . 5

Unusual Condensers. . . . 13

Can You Answer These? . . . . 15

Car Radio. . . . 17

The "Voyager". . . . 19

Teleconda 3. . . . 27

Pepping up No. 4 Set. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 07
CONTENTS

TECHNICAL —

Natural Reproduction. . . . 5

Wave Traps. . . . 11

Great Circle Gadget. . . . 13

Grounded-Grid R.F. Stages. . . . 15

The "F.S.L." — Plus. . . . 18

Caravan Radio. . . . 20

"Little Wonder Two". . . . 24

"Europa 5". . . . 26

Technical Topics. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 08
CONTENTS

CONSTRUCTIONAL —

"High Quality Six". . . . 9

"Q-Plus". . . . 17

TECHNICAL —

Ham Radio at Sea. . . . 5

Bias for Battery Sets. . . . 7

English Quality Amplifier. . . . 13

Radio on H.M.S. "Vanguard". . . . 21

Radio Reflections from Shooting Stars. . . . 24

Plastics to Revolutionise Television. . . . 26

International DX Contest. . . . 28

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 09
CONTENTS

CONSTRUCTIONAL —

Signal Tracer for Service. . . . 7

Build Your Own Oscillator. . . . 9

TECHNICAL —

Anisotropic Alnico. . . . 17

Beams, Beams, Beautiful Beams. . . . 21

The Kingsley "K.S.9'er". . . . 23

A Review of Ferrotune. . . . 25

Ideal Broadcast Station Console. . . . 32

Among Our Readers. . . . 34

Calling CQ. . . . 41

SHORTWAVE REVIEW —

Notes From My Diary. . . . 46

THE SERVICE PAGES —

Answers. . . . 50

1947 10
CONTENTS

CONSTRUCTIONAL —

"Snug 5". . . . 5

TECHNICAL —

Kingsley Equipment for U.H.F. .. . . 11

Adjusting the Dipole. . . . 27

"Rural 4". . . . 15

Servicing by Signal Tracer. . . . 29

Calling "C.Q." . . . . 33

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 11
CONTENTS

CONSTRUCTIONAL —

"Sally". . . . 5

TECHNICAL —

A Record on Six Metres. . . . 9

Signal Tracer. . . . 11

High-Fidelity Transformers. . . . 17

Highlights of Radiolympia. . . . 19

A New Method of Tuning. . . . 23

"Transmitter, FS6 Plus". . . . 29

Among Our Readers. . . . 33

Calling CQ. . . . 41

SHORTWAVE REVIEW —

Notes From My Diary. . . . 46

THE SERVICE PAGES —

Answers. . . . 50

1947 12
CONTENTS

TECHNICAL —

Electronics in Meteorology. . . . 5

Experiment in De-centralisation. . . . 7

Better Interstate Reception. . . . 9

Theatre Sound Equipment. . . . 13

Latest American Technique. . . . 15

Among Our Readers. . . . 17

Walkie-Talkie. . . . 18

Amateur Personalities. . . . 21

Antenna Tips for the New Hand. . . . 23

Networks — and "Rag-Chew" Clubs. . . . 26

Calling CQ! . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 01
CONTENTS

TECHNICAL —

Splendid Contest. . . . 5

The Champion Amplifier. . . . 7

Amateur Personalities. . . . 14

Convert to High Fidelity. . . . 18

"Mantelette Three". . . . 20

Operation Annie. . . . 22

Recent Valve Developments. . . . 29

Among Our Readers. . . . 31

Performance with Economy. . . . 35

Ham Notes. . . . 39

SHORTWAVE REVIEW —

Notes From My Diary. . . . 46

THE SERVICE PAGES —

Speedy Query Service. . . . 50

1948 02
CONTENTS

TECHNICAL —

Stir in Hi-Fi Circles. . . . 5

Walkie-Talkie. . . . 9

High Fidelity From Crystal Pickups. . . . 15

Hints and Tips. . . . 18

Home-Wound Power Transformers. . . . 19

Converters for "Six" and "Ten". . . . 24

Wanted — An Inventor. . . . 27

The "Teleconda" Powerport. . . . 31

Ham Notes. . . . 35

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 03
CONTENTS

TECHNICAL —

In Search of Fidelity. . . . 5

A Modern Battery Receiver. . . . 9

Radio World Review. . . . 11

Among Our Readers. . . . 15

A Personal Portable. . . . 19

3-Valve Triple-Wave Receiver. . . . 27

Calling CQ. . . . 34

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 04
CONTENTS

TECHNICAL —

ZAAYER Crosses Atlantic on "Six". . . . 5

The L.s.d. of High Fidelity. . . . 7

Amateur Personalities. . . . 13

Narrow-Band F.M. Adaptor. . . . 15

A Direct Coupled Circuit. . . . 17

T.R.F. Mantel Four. . . . 18

Speaker Impedance Matching. . . . 20

Permags Here to Stay. . . . 28

Circuit for an F.M. Receiver. . . . 29

Among Our Readers. . . . 31

Calling C.Q. .. . . 35

SHORTWAVE REVIEW —

Notes From My Diary. . . . 39

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 05
CONTENTS

TECHNICAL —

Limelight on Quality. . . . 5

A Home-made Hi-Fi Pick-up. . . . 9

Sad Lack of Technical Development. . . . 13

Protective Circuits. . . . 16

Deaf Aids From Health Clinics. . . . 19

An English Three-Element Beam. . . . 21

Germanium Crystals. . . . 23

Well-tested Battery Receiver. . . . 25

Among Our Readers. . . . 28

Effective Static Reduction. . . . 29

The "VK2NO" Ribbon Beam. . . . 32

Calling CQ. . . . 35

SHORTWAVE REVIEW —

Notes From My Diary. . . . 39

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 06
CONTENTS

TECHNICAL —

Fidelity Tuner With A.V.C. .. . . 5

Interesting Pre-Amplifier. . . . 8

Well-Tested Inter-Com. System. . . . 11

Oscillator for Code Speed. . . . 13

Communications Coil Assembly. . . . 17

The "Economy Three". . . . 19

Service By Substitution. . . . 24

SHORTWAVE REVIEW —

Calling CQ. . . . 35

Notes From My Diary. . . . 39

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 07
CONTENTS

TECHNICAL —

Building Box Baffles. . . . 5

Using H.F. Pentodes. . . . 9

Pre-Amplifier Tone Control. . . . 11

12-Valve Communications Receiver. . . . 13

Signal-Strength Meters. . . . 17

Among Our Readers. . . . 21

A Four-Valve Battery Portable. . . . 23

Calling CQ. . . . 27

Amateur Transmitting Licences. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

THE SERVICE PAGES —

Speedy Query Service. . . . 34

1948 08
CONTENTS

TECHNICAL —

Converter For Amateur Bands. . . . 5

History of "1933 Standard". . . . 9

"The Bedside 5". . . . 13

Loudspeaker Baffling. . . . 17

The American Radio Industry. . . . 19

Exceptional 20 Watt Amplifier. . . . 21

"Long Shot" Economy Beam. . . . 23

Calling CQ! . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

THE SERVICE PAGES —

Speedy Query Service. . . . 34

1948 09
CONTENTS

F.M. — Minus Boloney. . . . 5

Starting Off In Radio. . . . 9

New Broadcast Wavelengths. . . . 15

Buyers' Guide. . . . 25

Students' One-Valve Experimental Set. . . . 39

Calling CQ. . . . 47

How To Become a "Ham". . . . 49

The Morse Code. . . . 50

International Amateur Prefixes. . . . 52

The "Q" Code. . . . 53

Index to Volume 12. . . . 54

Short-Wave Review. . . . 55

Bargain Corner. . . . 58

1948 10
CONTENTS

Teleconda 4841. . . . 5

The Vibrator. . . . 13

Extension Speaker. . . . 23

Multi Channel Tracer. . . . 27

Problems With Battery Sets. . . . 29

Among Our Readers. . . . 31

Frequency Range. . . . 33

Calling C.Q. .. . . 43

A Converter For 50 Mc. . . . . 45

Shortwave Review. . . . 47

Speedy Query Service. . . . 50

1948 11
CONTENTS

De-Luxe Amateur Receiver. . . . 5

Equipment Valves For 1949. . . . 9

The Man Before Marconi. . . . 11

Junior Feedback Amplifier. . . . 15

Home-Made Hi-Fi Pick-Ups. . . . 17

A Personal Radio Set. . . . 19

The "Q-Plus" Coils. . . . 22

Resistor Faults. . . . 25

R.C.S. Coils Submerged. . . . 29

Tuning Range For Receivers. . . . 30

Among Our Readers. . . . 31

Calling C.Q. .. . . 35

Shortwave Review. . . . 39

Speedy Query Service. . . . 42

1948 12
CONTENTS

Car-Lectric. . . . 5

Dials and Cabinets. . . . 15

Infinite Impedance Detector. . . . 20

Communications Receivers. . . . 21

Home Recording Hints. . . . 25

Progress In British Radio. . . . 27

Mullard Receivers. . . . 29

Notes From My Diary. . . . 31

Speedy Query Service. . . . 34

1949 01
CONTENTS

An Electronic Alarm. . . . 5

Handy P.A. Amplifier. . . . 7

World Standard. . . . 13

A Challenge. . . . 16

Differential Condensers. . . . 17

"New Look" Selectivity. . . . 21

10/15 Converter. . . . 25

Standard Power Unit. . . . 29

Photo-Flash Experiments. . . . 31

New Set Designs. . . . 35

Speedy Query Service. . . . 42

1949 02
CONTENTS

Radio in the News. . . . 5

New Type of Fidelity Pick-up. . . . 6

More About the Standard. . . . 7

New Rola Speaker. . . . 10

Simple Galvanometers. . . . 11

Among Our Readers. . . . 14

Direct-Coupled 807. . . . 15

Service Oscillator. . . . 17

English Coil Box. . . . 19

British Television Exports. . . . 20

New Brand of Transformers. . . . 21

Medium-Fi. . . . 23

Key to the VT Valve Types. . . . 26

Shortwave Review. . . . 31

Speedy Query Service. . . . 34

1949 03
CONTENTS

Midway Portable. . . . 5

Improved 807 Amplifier. . . . 9

Car Radio Installation. . . . 11

A.C. Power from Batteries. . . . 13

Answers in Full. . . . 15

Radio Control for Models. . . . 20

Phase Splitting Designs. . . . 21

Reproduction of Speech. . . . 29

Among Our Readers. . . . 41

New Angle on Direct Coupling. . . . 43

Good Gramo. Motor. . . . 45

Shortwave Review. . . . 47

Speedy Query Service. . . . 50

1949 04
CONTENTS

Measuring A.C. Current. . . . 5

New Style Direct Coupling. . . . 7

A Simple Multi-Meter. . . . 9

Are Component Prices Unreasonable? . . . . 13

Time Is Money. . . . 16

Cathode Coupling, Again. . . . 17

How To Read Circuit Schematics. . . . 19

Photo-flash Outfit. . . . 22

A Wide-range Bridge. . . . 23

Among Our Readers. . . . 24

Simple Mantel Model. . . . 26

Introduction to "Ham-gen". . . . 27

Receiver Aerial Matching. . . . 28

T.R.F. Ham Receiver. . . . 31

Converting That Prop Motor. . . . 37

1949 05
CONTENTS

Heterodyne Frequency Meter. . . . 5

Third Dimensional Amplifier. . . . 9

Multi-Vibrator. . . . 11

The Car-Lectric — Mk. III. . . . 13

How to Read Circuits. . . . 19

Magnets and Magnetism. . . . 23

Factory-Made Set Design. . . . 29

Voltage Regulation. . . . 31

Sell Speakers. . . . 37

New Brand of Coil Units. . . . 38

Short Wave Review. . . . 39

Speedy Query Service. . . . 50

1949 06
CONTENTS

An Electronic Stroboscope. . . . 5

Television in Europe. . . . 7

The "Vega" Dual-Wave Five. . . . 9

Latest English Developments. . . . 13

More About Direct Couplers. . . . 15

Efficient Chassis Layout. . . . 17

The Up and Down Receiver. . . . 25

Index to Volume 13. . . . 26

Analysis of Receiver Noise. . . . 27

Voltage Regulation. . . . 29

Search for Elusive Hi-Fi. . . . 33

List of Instruction Manuals. . . . 37

Odd Resistor Values. . . . 38

Short Wave Review. . . . 39

Speedy Query Service. . . . 42

1949 07-08
CONTENTS

British Television Equipment. . . . 5

Signal Tracer with Oomph! . . . . 9

Latest Radiolette Model. . . . 13

Grid-Dip Wavemeter. . . . 17

Small Sets for Short-waves. . . . 19

Fluo Tube Light Unit. . . . 22

Post-war Organs. . . . 23

Direct Currents. . . . 27

Free Technical Data Offers. . . . 32

A Simple Meg-Meter. . . . 33

How to Wind Honeycombs. . . . 35

Short-wave Review. . . . 37

New International Call Signs. . . . 41

Speedy Query Service. . . . 42

1949 09
CONTENTS

Universal Speaker Input Unit. . . . 5

Effective Valve Checker. . . . 9

Versatile Amplifier Design. . . . 11

Electronic Voltmeter. . . . 15

Pre-Amps for Talkie Work. . . . 19

Alternating Currents. . . . 21

Research Workers Needed. . . . 27

Moisture Control for Textiles. . . . 30

Revolution in America. . . . 31

Distortion — Does it Matter? . . . . 34

Electronic Music. . . . 37

World of Radio. . . . 38

Short Wave Review. . . . 39

Speedy Query Service. . . . 42

1949 10
CONTENTS

A Quality Amplifier. . . . 5

Practical "Q" Meter. . . . 11

Dodging the Transformer. . . . 15

Improved Noise Limiter. . . . 17

Alternating Current in Practice. . . . 19

Effective One-Valve Sets. . . . 27

Tuning Unit for Powerful Receiver. . . . 29

Short Wave Review. . . . 31

Bargain Corner. . . . 34

1949 11
CONTENTS

Universal Output Meter Unit. . . . 5

Customer’s Choice No. 1. . . . 9

"Ideal" P.U. Characteristics. . . . 11

Amateur Radio Activity. . . . 12

Interest In Gramo Reproduction. . . . 13

Applications of A.C. Practice. . . . 15

75-Watt Modulator. . . . 21

Trade Co-operation Essential. . . . 25

Frequency Records Available. . . . 27

Interesting Circuit Book. . . . 28

Shortwave Review. . . . 29

Shortwave Stations of U.S.A. .. . . 31

Speedy Query Service. . . . 34

1949 12
CONTENTS

"Super-Six" Amplifier. . . . 5

Sets of Yesterday and To-day. . . . 11

Make Your Own Records. . . . 15

Double-Coupled Versatile. . . . 21

The Astor Models G.R. & G.R.P. .. . . 22

Our Technical Directory. . . . 26

The "Clapp" Oscillator. . . . 28

How to Get Started. . . . 30

Commercials on the Ham Bands. . . . 32

Official Goodman's Baffle. . . . 36

Radio Theory (Transmission and Reception). . . . 37

Shortwave Review. . . . 45

Distortion Percentages. . . . 48

Speedy Queries. . . . 50

1950 04
No issue published

1950 05
No issue published