MASTHEADE D I T O R I A L STAFF Alan M. Dorhoffer, K2EEK Editor Gail M. Schieber Associate Editor M The Radio Amateurs Journal ON THE COVER: The C a n a d i a n s u n s e t s i l h o u e t t e s VE3BMV"s s t a c k e d razor b e a m s as he s e e k s t o w o r k the rare o n e s . CONTRIBUTING STAFF Frank Anzalone, W1WY Contest Chairman John Attaway, K4IIF DX Editor Larry Brockman, N6AR Robert Cox, K3EST W.W. Contest Directors Theodore J. Cohen, N4XX Washington Commentary William DeWitt, W2DD SSTV Editor Leo Haijsman, W4KA WAZ Awards Manager A. Edward Hopper, W2GT USA-CA Director Robert Huntington, K6XP WPX Award Manager George Jacobs, W3ASK Propagation Editor Rod Linkous, W70M Assistant DX Manager Donald McClenon, N4IN 160 M. Contest Director Irwin Math, WA2NDM Math's Notes Hugh R. Paul, W6POK Technical Evaluations Karl T. Thurber, Jr., W8FX Antennas Adrian Weiss, K8EEG/0 QRPp Editor Bernie Welch, W8IMZ WPX Contest Director Bill Welsh, W6DDB Novice Editor BUSINESS S T A F F Richard A. Ross, K2MGA Publisher Dorothy Kehrwieder Assistant to Publisher Jack M. Gutzeit, W2LZX Advertising Sales Manager Janet T. Kurtz Circulation Manager PRODUCTION S T A F F Dorothy Kehrwieder Production Manager Elizabeth Ryan Art Director Hal Keith Illustrations Offices: 76 North Broadway, Hicksville, NY 11801. Telephone: 516 661-2922. CQ ( I S S N 0007-893X) is published monthly by CQ Publishing Inc. SecondClass Postage paid at Hicksville, N.Y. and other points. Subscriptions prices: one year $14.00, two years $25.00. Entire contents copyrighted CQ Publishing Inc. 1979. CQ does not assume responsibility for unsolicited manuscripts. Allow six weeks for change of address. Printed in the United States of America. Postmaster: Please send form 3579 to CQ Magazine, 76 North Broadway, Hicksville, NY 11801. JULY, 1980 VOL.36, NO. 7 FEATURES. T H E FRUGAL F I N A L - A LOW COST MULTI-BAND LINEAR AMPLIFIER Robert Baird, W7CSD THE RECORD W I N N I N G DXPEDITION TO CURACAO, PJ9JR Lew Gordon, K4VX 40 PLUS 30 EQUALS A LOT OF PEOPLE A N D A C R A N E Bruce J a c o b s , K2QK THE TRANSMISSION LINE TRANSFORMER Irving M. Gottlieb, W 6 H D M A N T E N N A S : THE DEPENDABLE, UBIQUITOUS DIPOLE, PARTI Karl T. Thurber, Jr., W8FX T H E RTTY L O C A L LOOP Byron H. Kretzman, W2JTP AMATEUR RADIO . . . A HOBBY FOR A L L SEASONS C Stewart G i l l m o r , W 1 F K A STACKED LOG PERIODIC YAGI FOR SIX METERS T.E.White, K3WBH T H E PI-NETWORK Edwin P. Fuller, W4EDM T H E " V I E W " FROM HERE, SSTV AS " S E E N " FROM THE EUROPEAN SIDE Richard Thurlow, G3WW CQ REVIEWS: THE HEATHKITSA-2040 A N T E N N A TUNER KIT Alan M. Dorhoffer, K2EEK INTRODUCTION TO BASIC, PART VII: T H E PHILOSOPHY OF PROGRAMMING Buzz Gorsky, K8BG COOLING IT DOWN Dick Sander, K5QY NOVICE: GUIDELINES FOR CONDUCTING AMATEUR RADIO SHOWS, PART III Bill W e l s h , W6DDB CQ REVIEWS: THE YAESU FT-207R MICROPROCESSOR BASED 2 METER HANDIE-TALKIE J o h n J . Schultz, W4FA BUILD YOUR O W N TRACING/LIGHT BOX Harry Miller M A T H ' S NOTES: TELEPHONE DEVICES Irwin Math, W A 2 N D M DATELINE. . .WASHINGTON, D.C.: THE INS A N D OUTS O F THE WASHINGTON SCENE Theodore J. Cohen, N4XX CQ SHOWCASE THE PRINTED WORD: NEW READING MATERIAL CRANIUM QUERIES: FIND THE ERROR CONTEST Martin Bradley Weinstein, WB8LBV THE 80 METER PYRAMID A N T E N N A William R. Mest, W B 0 A O F 8 13 16 18 27 28 32 37 40 47 52 54 58 59 64 80 81 82 87 88 91 94 DEPARTMENTS. AWARDS: STORY OF THE MONTH - JAMES MICHAEL CARROLL, W1UYL A. Edward Hopper, W2GT DX: THE WA4/WB4 INCOMING QSL BUREAU John A. Attaway, K4IIF CONTEST CALENDAR: CONTESTS FOR JULY A N D EARLY AUG., EUROPEAN 1979 (WAEDC) CONTEST RESULTS Frank Anzalone, W1WY PROPAGATION: SHORT SKIP CHARTS FOR JULY A N D AUG. George Jacobs, W3ASK ANNOUNCEMENTS 6 ZERO BIAS H A M SHOP 97 42 69 76 84 4