Fm Anthology

This book is largely a collection from FM Bulletin, edited by K6MVH and WA8UTB, The material is taken from the editions of February 1967 through February 1968. 3 Vol. 1 , This book contains selected technical and construction articles taken from FM Magazine after March 1968. S3 Diode Circuits Handbook . 1.00 Parametric Amplifiers . + t 33.00 73 Transistor Circuits, + , . S 1.00 Please send me ihe books checked at left City State Zip Books shipped prepaid in US and Canada,

Transceiver

The bracket at the rear of the unit should be piaced near the center of the transceiver's back plate, as shown here, If a single bracket is mounted at the side an undue strain is placed on the front bracket and the unit can vibrate loose in a short timef Vfo stability, the continued good health of the rig, and some safety considerations depend in large measure on the stability of the installation. It is surprising that some operators will sacrifice the good repair of their unit...

Qso

hanks to the efforts of a few eon-scieutious hams, an alert newspaper, and a mercy-minded airline, a Costa Rican hemophiliac was saved from What doctors said was sure death. Hie incident was a highly dramatic example of the importance of ham radio to a community. fhe international mercy mission was touched off by i ong Beach, California Amateur Nate Brightman K60SC, who received an urgent message from a Funa clipper fishing off the coast of Mexico. The vessel's radio operator, Rodriguez Beeche...

Lja

TERMS Deponit wlih orderlh balaoee C, O. D. - > r- RemiUaAce In lull. Minimum order (S.OO K.O. B. NYC* ub ect to prior & ale and pdCf Chiui t 47 Worten (2nd fl) New MY-10007 Pt*. 212-267-4605 of radio principles and practices as IVe seen. It certainly doesn't bear much resemblance to that tortured language in the ARRL Handbook or my college textbooks. David Halliburton W9EQG 10809 Old Coach Road Potomac MD 1 am a newcomer to ham radio and I would like to thank you for your Advance Class...

Transistors

This report describes a broadband VHF AM transmitter that has an output power of 4W over a range of 118 136 MHz with an rf input of 5 mW, It requires no tuning in changing frequency. Though the transmitter is not designed for amateur use, it illustrates many principles of interest to hams, and it could probably be retuned for the 2 meter band. The transmitter operates from a 25 V dc supply the rf circuitry is designed for operation from a 12.5V supply with col-iector modulation and the 25V dc...

Manifests and Other Haoov Occasions

Assitance with reciprocal DeMolay from the State of New licenses willingly given. Further in for-York will be operating a station from mation and skids available from Alan LISTING SERVICE Gear to sell Need rig Sellers 1,00 Lists information year. Buyers free. SASE brings details W8TXX listing service, Box 1111, Benton Harbor MI 49022, CERAMIC 7289 (3CX100A5) tubes. Replace 2C39. 3 each or trade for 2MTR FM sear. W4SQD, Box 73, Folly Beach SC 29439. ELECTRONIC ORGANS, solid...

Amateur Electronic Supply

i the, & it Place, to- ftu tc uUe uauSi ttetu < f GSi fob the, jfllioiAAUUf I& GA& HA,' SWAN 350C 80-1Otn Transceiver. ( 50 SWAN 500CX 80-10m-Deluxe ( 50 TV-2B (Specify 14 or 50mc if) . . 30 Mark II 80-10m Linear - w tubes ( 50 Mark 6B 6m Linear - w tubes . ( 50 Power Supply for Mark II & 6B 5I0X MARS Oscillator - less crystals lOOkc Calibrator kit for 350C only . 500kc Calibrator kit for 250 or 250C I4CP As above, but Positive Ground II7X Basic 117v AC Supply ONLY. 230X Basic...

New Products

Schematic Digest Updated For Modern FM Units As FM gains in popularity with amateurs, schematics and data covering the surplus commercial units seem to get ever scarcer. A company called Two-Way Radio Engineerst Inc,, in Boston, has been doing something to ease the situation This company is publishing a very large (11x17 in.) 136-page volume of circuit diagrams, photos, crystal-ordering, and alignment information for most Motorola rigs made during the 1950s and 60s. The book has been updated to...

Swan Antenna Company

646 N.Union Box 1122 464-9897 Stockton. California 95201 ve been in there pit chin' in contests for , iyears - but each attempt to turn in a really big score has been abortive. Some unforeseen hitch - domestic, social, or business has always come up. This time yes, I said this time, I was all set to pile up a mighty total. Lady Luck was going to be with me this weekend. 1 simply felt it, and what better companion to have on one's arm - especially the code arm. Nothing had been left to chance, i...

White

Are you slightly bored with the general QSO Is it so dry your lips crack and your ears become dusty . . 'You're coming in here Q-5 by 9 plus, armchair copy. I'm running a Quecnie 5, a swing-a-ling multi-element swizzle stick and the modulator gets excited by the exciter when the oscillator is in oscillation. You have a bodacious signal in here. Before I run, what's my report and your handle again 1 couldn't copy. . . .A couple of these and you throw the switch. If you would like to spend one of...

Radio Handbook

Completely updated edition of the famous communications handbook which is the electronics industry standard for engineers, technicians and advanced amateurs. Explains in authoritative detail how to design and build all types of radiocommunications equipment. Includes SSB design and equipment, RTTY circuits, latest semiconductor circuits and IC's, as well as special-purpose and computer circuitry. 896 pages hardbound. Order 24020, only. . 13.50 gjg The Radio Amateur's 1 F-M Repeater Handbook I...

Gem Quad Ox

iv n Jptrmum lor Wild gtirl witti ft n rr forward um ol fttfectftiMM riiull K in Hceilirtl repctior of urv wtntvd njriali. fron to ra to d lt fn 4 fv n - HomMj 0M er durtbi huvy flirty Aluminum dUor o lt t Hoik iilmn rHMftw o boom ' F itirrijlan rm withiTpr.rl LOO m p h wiftrit with nilfliPTlLHli Jo4dHfiy ori TDWPr TndntHf arm o ign lair piiiii lhrough Itx inYi , Lm wind itmlincf l mmjtn n d fw awni guy iHdkj i.- r, Cmlffmt ImattrT O-h C4fl.f SptiTBH -SM pHini- ' Strnpii iiHmbt tumn milrvrt M...

Devices

Mol Cmt.nr Dk gt d MP2600____ 90 , 12ST0.M V siehe by HAL A Si 25 iCs t LMO.914. . . GOi f iL 933 90 MRTL MC790P, MC890P S3 00. 10 S19.50 MC70SP MC792P MC725P SI.05. lO'SS.SO Also Available MC788P. MCflBOP, MC767P. MC97BGP OFAMPt TOROIDS- Indiana Gen ral CP 102-06. CF1G2-Qlt CF101-Q2 50 CINCH IC ckeiv 14 DIP, 8 ICS 50c HAL DEVICES Add Post gerxnd for comply fcL 3ox 365L, Urbana, Illinois 61801 24 PACKS, cmrnmed with Gov't Surplus Electronic Gear - Lh Bargain Buyn 111 An gt ei1e l U wit pay ynu...

Audio Oscillator

RF Output Mod ulatiori Audio Battery Price Band A- 400-550 kHz Band B- 550-1600 Khz Band C- 1,6-4.5 MHz Band D- 4.5-13 MHz Band E- 12-30 MHz Over 100,000 iV 1000 Hz I kHz, adjust, intensity 9 V Eveready 216 19.95 Schematic diagram of Knight-Kit KG-696 rf generator and specifications, tor. The majority of the circuitry is wired to a PC board of first-rate quality, featuring a unique application tor converting a conventional wafer-type rotary switch to a PC-type component. interior view of PC...

Vac

Schema tic of rotator with added capacitance shown in boldm Schema tic of rotator with added capacitance shown in boldm light and not of much consequence with a strong 1 V signal but in a fringe area, il could have been troublesome in many respects. SPECIAL LIFER DEAL 10 down and 8.80 per month for five months. In addition to getting 73 for the rest of your life you will get a great big beautiful LIFE SUBSCRIBER Certificate for the shack walL The cover price has gone from 37d to The yearly...

Mars Sstv Demo

The enlisted men's service club at Andrews AFB was the scene of a slow scan TV demonstration in which 18 Air i oree MARS operators were in attendance, Dr, Theodore J. Cohen W4UMF reviewed the broad field of slow-scan communications beginning with a discussion of bandwidth-time considerations, and continuing on through equipment construction, color transmission, and computer processing of slow-scan pictures. A live demonstration of a slow-scan monitor, using taped pictures as a source, topped...

News

After three days of operation on Geyser Reef as ACQ A GR, the high winds and heavy rain took their toll. When two drums of gasoline floated away Gus had to give up temporarily and make the hard trip back to the Comoro Islands for more gas. The reef is very difficult to get on and there is only j very small place for a station to be set up. .and even that gets splashed Trevor 5W1AR has been active from Western Samoa, bless him. He is living in the same house as 5W1AZ and, I believe, using the...

Engineering

Box 4111, Diamond Bar, California 91766 NOW AVAILABLE A TRANSISTORIZED FM l-F STRIP FOR YOUR HOME BREW PROJECTS FEATURING 4 Stages for Superb Limiting Action 5 kHz Deviation Acceptance 3 dB Limiting at Less Than TOO Microvolts 4 12 VDC 10 mA Power Requirements Small Size 4 x 1 x Factory Tuned and Assembled ORDER AS MODEL 703 18,95 PPD FROM HI-SPEC, PO Box 387, Jupiter, Florida 33458 Metoltex Lapel Bar- 1,50 Mefattex Tie Clip - 2.25

NEW Heathkif SB

New all solid-state Linear Master Oscillator gives shorter warm-up, greater stability, increased dial linearity New receiver circuitry delivers 0,35 uV sensitivity 180 watt PEP SSB input 170 watt CW input 80-10 M coverage USB, LSB or CW modes Built-in CW sidetone Built-in 100 kHz crystal calibrator Triple Action Level Control' reduces cMppmg amp distortion Front panel selection of built-in 2.1 kHz SSB or optional 400 Hz CW crystal filters Operate with built-in VOX or PTT Fast, easy circuit...

Club

The hobby of amateur radio has appealed to some students of Perkins School for the Blind in Watertown, Mass., so much so that they have formed a radio club. There are eighteen members in the club with presideni George Henault presiding. He is shown here operating the club Dick Gonyea, an electrical engineering student at Northeastern University volunteers three hours a week to help the younger members achieve their novice licenses, Glenn Grimes and Paul Burkhardt are studying Braille schematic...

Operating Desk

Ham Radio Operating Desk

The tabletop is inclined slightly for operator convenience. The design shown here was used in the author's consolef but individual preferences may dictate slight differences in layout, sJant, etc. Since plywood is a thirsty material and rather grainy, take time to sand the entire untt well and then apply a good primer. Use good-quality high-gloss enamel for the finish and apply several coats. Allow for a bit of extra paint to keep on hand for painted battleship gray, which is a standard...

Tower

While a ham in Long Beach worked to save the life of a dying man in another pari of the world see headline, this issue , another amateur in a neighboring community was being legally assailed by public-spirited citizens who were protesting installation of a 55 ft tower. Tom Rothwell, an Extra class ham of Los Alamitos, California, had applied for and received permission to construct the tower, but residents in the area appealed the decision. The city council called a public hearing after reading...