FETS- Transistors That Replace Tubes 50 POPULAR FEeR;96 CENTS ELECTRONICS BUILD One -Diode Signal Generator Low Distortion CB Speech Compressor.. Illllllllili Switch to NBFM -Don't Fight TVI NE6lE FM TAE PHONO Convert AM Radio ,, , To Marine Band BUILD ° Solid -State 70 -Watt Stereo /Hi- ON tq 1 9 AAA l ii0o9 1',, 03IjSÑ11rN+U6 SPECIAL: SN3A31S 0 CT Q New & A Depart 2'700WIEI631S9E106E 99403 4' AmericanRadioHistory.Com Discover New Achievement Kit Custom Training Kits the excitement "Bite Size" Texts Only NRI offers you this pioneering method of "3- Dimensional" home - study training. It's the result of of learning more than half a century of simpli- fying, organizing, dramatizing subject matter. As an ambitious man you can effectively learn the Electronics Electronics field of your choice the NRI way. But NRI training is more than kits and texts. It's personal services, too, which have made NRI a 50 -year leader in the home - with training kits study field. 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SCHAUERS, W6QLV 68 INFORMATION CENTRAL Kicking off our new question -and -answer department JOHN G. CONNER, W4PIO 71 CONVERT YOUR "ALL- AMERICAN 5" TO MARINE BAND Easy modification puts AM broadcast -band receiver on 2.5 -MHz band R. L. WINKLEPLECK, WA9IGU 73 NBFM ROUTS 6 -METER TVI Why fight TVI when you con easily switch to NBFM? LOU GARNER 77 SOLID STATE MATT P. SPINELLO, KHC2060 80 ON THE CITIZENS BAND CB club success story ROBERT LEGGE 82 ENGLISH- LANGUAGE BROADCASTS TO NORTH AMERICA HANK BENNETT, W2PNA 83 SHORT -WAVE LISTENING Misinformation verified HERB S. BRIER, W9EGQ 84 AMATEUR RADIO CW is dead ( ?I 116 DX COUNTRIES AWARDS PRESENTED DEPARTMENTS 8 LETTERS FROM OUR READERS 14 ELECTRONICS LIBRARY 15 READER SERVICE PAGE 22 NEW PRODUCTS 26 TIPS 8 TECHNIQUES 32 NEW LITERATURE 34 OPERATION ASSIST der "medicine man" cures TVI's 73 "But, George, he's not a tube!" 47 POPULAR ELECTRONICS Is Indexed This month's Cover photo by in the Readers Guide Conrad Studios. Inc. to Periodical Literature Copyright ® 1966 by ZIFF -DAVIS PUBLISHING COMPANY. All rights reserved. POPULAR ELECTRONICS, February 1967, Volume 26, Number 2. Published monthly at 307 North Michigan Avenue, Chicago, Illinois 60601. One year subscription rate fer U.S., U.B. Possessions and Canada, $5.00; all other countries, $6.00. Second class postage paid at Chicago, Illinois and other mailing offices. Subscription Service: Portland Place, Boulder, Colorado 80909. AmericanRadioHistory.Com TRAINS y NOT ONLY DEVR TECH GET HOME LABORA TORY EQUIPMENT HELPS YOU - YOURS TO KEEP! YOU ... BUT COST IN AT NO EXTRA STARTED ,/ ,'1 ;; ; OF THE 31() ,',1O%1 ELECTRONICS! VPREPARE AT HOME Whether you want to prepare for a good -paying new job or for advancement in Electronics with your present employer, DeVry Tech offers specialized educational programs designed to meet your needs. You set up your own HOME LABORATORY and work over 300 construction and test procedures to develop on- the -job type skills. You build a quality Transistorized Meter, a 5 -inch Oscilloscope and a special Design Console. DeVry also includes modern "programmed" texts, instructive motion pic- tures, Consultation Service. Effective? Yes! VRESIDENT SCHOOL If you prefer you may get all of your training in DeVry's U.S. or Canadian resident schools under the close guidance of friendly, experienced instructors. You work with a wide variety of commercial equipment similar to that actually used in in- dustry as you prepare in our laboratories for a technician's job in Communications, Microwaves, Radio -Television. Automation, Radar, Computers, or other branch of Electronics. DeVry even provides part-time job placement service to those who wish to earn extra money while attending day or evening classes. VPLACEMENT SERVICE Meet W. E. Bartz, who has helped thousands of DeVry men toward exciting, profitable careers in Electronics. When YOU complete your program, he will help you too. As Placement Manager in touch with business and industry across the nation. Bartz knows the employer demand for DeVry- trained men. He has cooperated in placing our graduates with thousands of firms! Men 18 -45, start preparing NOW for this vast opportunity `field. Soon you should be ready for DeVry's valuable employment help! MAIL COUPON TOD AYi DeVRY TECHNICAL INSTITUTE No 4141 Belmont Avenue, Chicago, III., 60641 Dept. PE-2 -X Advanced Please give me your two free bookllets, "Pocket Guide to Real Earnings," and "Electronics in Space Travel"; also include details Education or on how to prepare for a career in Electronics. I am interested in Previous Technical the following opportunity fields (check one or more): Free Space & Missile Electronics Communications Experience Needed Television and Radio Computers Send coupon Microwaves Broadcasting to Get Started Radar Industrian Electronics for these t Automation Electronics Electronic Control Your ambition and desire to suc coed are more important! DeVry factual bo Name Age guides you every step of the way toward success. lets NOW Address _Apt Zip City State Code DEVRY TECHNICAL INSTI Check here if you are under 16 years of age. 4141 Belmont Avenue Chicago, Illinois 6064 HOME STUDY AND RESIDENT SCHOOL TRAINING 2103 AVAILABLE IN CANADA Accedited Member n1 Natoo.l Home Study Covr, r February, 1967 5 AmericanRadioHistory.Com Now there's a full line o POPULAR ELECTRONICS PHILLIP T. HEFFERNAN Publish, OLIVER P. FERRELL Editor ROBERT CORNELL, WA2HDQ vanao,no Editor JOHN D. DRUMMOND Trehaicol Edit, Soldering Tools WILLIAM GALBREATH Art Director MARGARET MAGNA for all soldering needs A...ar.ote Editor ALEXANDER W. BURAWA Assistant Edit,ie Each model any outperforms other soldering ANDRE DUZANT tool of comparable size and price. All have Technical tl Lustrat.. NINA KALAWSKY replaceable tips of solid copper, instant heat, t.'ditor ial Assistant long reach, and rugged construction that PATTI MORGAN means long -life, dependable performance. Eddor ,l H. SENNETT, W2PNA N. S. BRIER, W9EGQ 4 E. GARNER, JR. M. P. SPINELLO, KHC2060 t a,,i,.hat.n 1..1.t.,, LAWRENCE SPORN Ade ..hnno Sales Mana r, ARDYS C. MORAN Ad,r.usuia Service Manager ZIFF -DAVIS PUBLISHING COMPANY Editorial and Executive Offices One Pork Avenue, New York, New York 10016 212 679 -7200 Eastern Advertising Manager, RICHARD J. HALPERN Midwestern Office 307 North Michigan Avenue, Chicago, Illinois 60601 312 726 -0892 Midwestern Advertising Manager, JAMES WEAKLEY Western Office 9025 Wilshire Boulevard, Beverly Hills, California 90211 213 CRestview 4.0265; BRadshaw 2 -1161 Western Advertising Manager, BUD DEAN Japan: James Yogi c/o Fukushima 19 -14 Minami 3 -chome Koenii, Suginami -ku Tokyo, Japan Circulation Office Portland Place Boulder, Colorado 80302 William B.