Unnumbered Page Advertisement 1

Radio Record, Volume III, Issue 50, 27 June 1930, Unnumbered Page

You Change Your Car Oil ARE YOU FAMILIAR b ecause experience and the advice of Car manufacturers has given you WITH THIS to understand that a much better performance and longer life is obtained APPARATUS when the car gcceives the necessary attention __The same applies to your radio receiver in a lesser degree: Your set cannot give you complete sati8- faction and perfect {eception over a long period__without: overhauling the valves have only a limited life_connections become loose and cauge di tortion; in fact; dozens of things which can easily be avoided happen to your set unless they are watched for and prevented. Give your set every opportunity to perform up to standard_ purchase the Radio Guide and become convergant with your receiver' 8 operation: Learn how to service it yourself Check up to-day Purchase a copy of this valuable publication and learn how 1 SECTIONAL CONTENTS SECTION 17-Yester- %Rlifeg bome-built day To-day and To- accumulators tle SUMMARY OF THE morrow The story of two-Valve A.C Brown- broadcasting in New ing-Drake with power ealand, told from an detection the D.C LEADING ARTICLES interesting angle ~il- Hammarlund Roberts lustrated with photo- brought up to date. The Modern AC. Set: graphg; SEOTION 6. From SECEION 27-Beyond Near and Dar 8 The The Modarrs Battery Receiver. the Controls TTells short wavC section; when the swvitch is containing an AC Local Station turned how music and adaptor and a DC re: 'pcaker Details. entertainment cone ceiver that will bring from aar. The Jan- in 5SW (England) 01 Aerial Information: guage is 8imple yet thle speaker. nothing essentiai i8 SECTION 6. Withib Electric Gramophones. left out. Dealg with the Vacuum Explain- tle modern get, and ing all about ralyes, Wavetrap8a gQal selectivity sen with full tables_ All-Electric B.D. Tuner._ sitivity and quality_ SFCTION 7. Search There ig 2 section 0n Ing the Ether Call Power Packs and Chokes. speakers covering four signs of every station and illustrated Cbroadcast short- Circuits of AC. 47d- DC Bigee= ten diagrams and trate and amateur Shorf-wave Receivers and pictures--and all new likely to be heard iw matter_ New Zealand. adapters: SECTION 3_ From SECTION 8_When Trouble-tracking Schedules: Radio to Record : De- the Set Goes Wrong roted to the radio Tracking troubles Tke World e Call Signs. gramophone enthusi- with condensed sched- ast explains_ the ules for immediatc Glossary of Radio Termo: "hf; and ~how" of location of troubles: electric granophone SECTION 9--Facts & reproduction: Figures Handy and SECTION 4 Learn- unusual tables, with 4 ing hy Doing The speed in constructor s Bection_ SEGEcophone ell ready to Knick-knacks th_ a clip out (there is no- every constructor will thing 01 the back ) . delight to make- SECTION 10.~Gios- Transformers fo r sary Cousiderably 2/6 every purpose wayc- revised and brought Price traps and another Ip to date all defini- tal set_ SA" ejmiS- tions are thG esse ce ator ; & pushpull to Of simplicity_ The 1930 CLIP THIS COUPON 7 I U Y Uv 1+ 7 G2 2 Vr 'Krz' '2Y FADID 08 RADIO RECORD," 92 Po: Box 1032. Please find cncloged PN: for 2/9, being pays ment and poatag? for One "Radio Ligtcqert' GUIDE AND GALL BOOK Guide and Call Book.' Obtainable at 2h1 Booksellers ane Radio Name _ Dealere Or Post the Cov" #on Addrexs _ Published by 'The Radic Record and Electric Home Journal: 81X