Amateur Radio

The basic element of IoAR is its Members who may be either licensed Amateurs or persons seriously interested in Amateur Radio. There is only one class of Member. All Members may vote. There is a special reduced STUDENT membership rate for those who have not yet reached their 20th birthday. Only licensed Amateurs may hold office in IoAR and all officials must be members of IoAR. Nominees for any office must have held an Amateur license for 18 consecutive months and have been a member of IoAR for...

Uar

Amateur Radio Book Archive

TH15 (5CHARLIE HE'S A DEDICATED RTTY HAM WRrre HIM A NOTE-HE'S I'LL NEVER SET THAT WRAPPED UP IN HAM RADIO THOSE GUYS HAVE SOME. THE LIMIT M, JSg AvWRlfcrtT LET'S GO WITH THE ROUCALL DON'T NOBOPV 0REAK IN OUTA TURN YOU CAN MEET SOME MORE OF THE FELLOWS RAFTER THE MEETING fiSN'TTHIS A WONDERFUL EACH WITH HIS OWN TALENTS CONTRIBUTING TO THE WHOLE Of THAT 6 RE AT SERVICE BUT-I WANT TO6ETHOME AMD GET STARTED ONSOMt1 AWARDS t MADE FOUR DOZEN CERTIFICATE FRAMES .THIS WEEK- WW 6fTMVo, JUST MHTA...

Fair Radio Sales

Box 1105 LIMA, OHIO 45802 POWER SUPPLIES COLLINS MODEL 100 Variac controlled-metered for both volts and mo. 0-500 v at 200 ma. . . 55.00 COLLINS MODEL 707A1. Regulated-uses 5 each 6X4 and 3 each OA2 tubes. Delivers minus 400-160150 and plus 300-150-150 volts DC. Metered. 65.00 PS 1. Zero to 400 vdc at 10 ma and 6.3 v 4 a. Variac controlled-metered. 25.00 PS 2. Zero to 300 vdc at 60 ma and 6.3 v 3 a. Variac controlled and metered 20.00 PS 3. Zero to 300 vdc at 100 ma and 6.3 v 4 o, and 0-10...

Small Pair Beats A Full House

One particular pair, SB-34 sideband transceiver,exciter and SB2-LA gallon linear amplifier are small enough to beat a full house. Or, for that matter, any no-room-for-passengers KW mobile installation. Proof. Photograph shows SB-34 and SB2-LA together as a complete 1KW, 4-band sideband station (including receiver of course beating a full house handily. The two units placed end-to-end occupy less than 2 linear feet just over 1 foot in depth, less than 6 inches high But SBE didn't set out to...

Herbert Wgordon Company

Woodchuck Hill, Harvard, Mass., 01451 Telephone 617-456-3548 Ron Gunn WA6KLL 358 Albatross Ave. Livermore, Calif, 94550 Gather round, all you poor harassed ops who are getting hot on your cw or want to and who own a monitorless transmitter or sideband transceiver. Some of those rigs are pretty hard to hook a monitor to so you can tell what you're sending. You can install a noisy relay to operate the monitor, but there is a better and cheaper way in most cases so why not use it Let's live modern...

Wnsd

Able position ARRL is in with regards to their classifications on countries. They face insolu-able problems in running DXCC. For instance there is the little business of deciding what is and what is not a country. Any of you who have been following this situation know how ridiculous it has become. If you haven't been following it, trust me that it is ridiculous. Then there is the interesting phenomenon of the expeditions which aren't really there. This may be an old time honored arrangement,...

Ueo

INSERT XXII IF MIKE QUALITY .- 'wjL'NDi TOO B SSY SEE TEXT) Fig. 1. Schematic of the low cost dynamic microphone using the HA-1 receiver unit. than abovst 6.50 if all of the material, including the HA-1 Unit, is purchased new. The interior of the microphone head and the completed microphone with stand are shown in the photographs. Needless to say, one does not have to adhere strictly to the miscellaneous hardware used by the author as there are probably many variations of mounting that would...

Special

902A Scope tube 2 new 2.95 ea. 3C22 Lighthouse tube new 2.95 or 2 for 4.95 1P28 Photo Multiplier tube 3.95 100 KC Crystal in metal holder new 4.95 1000 KC crystal for LM or BC221 4.95 2 volt rechargeable batteries 2.50 Navy Beam Filter 1020 cy. with cord & plug 1.95 208B Dumont Scope 5 49.50 Mobile wonder 12V in 24 V out at 4 amps or 6V in 12 V out at 4 amps 9.95

Receivers

Collins R-390 URRA (like new) 749.00 Collins 75A2A (W mech filter) 213.00 Collins 75A4 (W 3.1 filter) 419.00 Collins 75S1 (W noise blnkr) 429.00 Drake 2-B (clean) Hallicrafters SX-96 Hallicrafters SX101 IMA 189.00 Hallicrafters SX 101 (clean) 149.00 Hallicrafters SX-73 Hammarlund HQ-170C National NC-I83D Heath HR-20 check these features + all transistorized, self powered, * military grade epoxy circuit board. rugged construction. * revolutionary tuning indicator, as accu- i * single channel and...

Price Breakthrough On Beams

FULL SIZE new complete with boon anil hardware SWit, 1 1 handles 5 kw adjustable entire band and l aluminum alley tubing coax feed 3 el 20 22 3 el IB 516 2 el 20 IS 3 el 15 12 4 el 10 IS 4 el f, 15 VERTICALS ALL BAND VIGO (fi thru 160) 18.95 QUADS NEW NEW ALL METAL (except insulators) Cubical tluads 2 el full size complete with boom, all hardware terrific gain and directivity best quad ever made no bamboo 20 meter J25 IS m 24. Bcmit with order, shipped express collect. GOTHAM, 1805 PerdJ Ave.,...

In a townhouse on lonisburg Square

Louisburg Square an island of tradition and elcgance on Beacon Hill in Boston. Also, the home of hotel man Ernest Henderson, W1AUC UDY, and the location of his amateur station. Mr. Henderson is Chairman of the Board of xhe Sheraton Corporation of America, and his choice of amateur equipment is National, of course. For over half a century National gear has been the choice of critical amateurs requiring maximum performance, reliability, and workmanship. If these factors are important to you, then...

Info

Lee PefiMie LoK Periodic, fin 6 Ihrnugb 70 er The VHF Antenna Handbook is your complete guide ho VHF and UKF antennas. This outstanding book is by Jim Kyle K5JKX, on of the outstanding technical authors in ihe electronics field. The VHF An-tenno Handbook Covers complete theory and all practical details far every type of VHF and UHF antennas, A special feature is the commercial antenna catalog section. If you're interested in VHF, you should have this booh. Price if 2 from

Parametric Amplifiers

This book, the first on parametric amplifiers for the ham, is Written for the average amateur and explains in simple language how they work, how to build your own for the various UHF bands, and how to tune them up. Parametrics have helped UHF move into the space age, but don't forget that the first working parametric amplifier was built by W1FZJ and worked on si* meters. Order this book direct, 2.00 postpaid, or from your oca parts distributor.

Driven Element Readings

Finally, for reference sake, and purification of the presentation, Fig. 6 illustrates the current peak readings made after the eight element yagi was completed. For reference sake the dashed line is included as the original readings taken with the driven element alone. Here it is clearly evident that current relationships in the transmitted wave front are largely distorted and re-played with the addition of the parasitic elements to the single TASI ELEMENTS 5HCWN IK RELATIVE POSITiON TO BOTH...

Slotted Line for mc

Here's an easy-to-build instrument for measuring frequency, VSWE and impedance. The SWR bridge is a very useful and sometimes badly neglected tool. Especially on 1250 mc with only two or three watts of power, you should measure your SWR and do something about it if necessary, I recently joined the 23 cm boys, though I have only worked 1234 mc so far. My first attempt to communicate with W8VKQ on the other end failed but after two evenings of diligent work with a meagre amount of test equipment...

Simple Sixand Two Amplifier

Bill Hoisington K1CLL Peterborough, N.H. Having been called on recently to build a commercial high power amplifier switching from 20 to 150 mc with complete frequency coverage for use as a laser modulator, I was very tempted to give it a whirl 011 the air as it was being tested through 50 and 144 mc. The customer was in a rush, though, so it was delivered, and another was built strictly for six and two, although it can be made to work down to 80 meters with a more expensive switch and more...

IN

Use of a zero center microammeter for the Monimatch. Fig. 2. Final circuit which gives conventional Forward ond Reflected readings as well as the special Tune position. Fig. 2. Final circuit which gives conventional Forward ond Reflected readings as well as the special Tune position. The next logical step quickly suggested itself. Since the outputs from the coupler are of opposite polarities, why not mix them in a common load and read the resultant It works. Se Fig. 1. Two 1 k resistors...

Ex

SO-lOOOmc EX 8.25 Set of 120 Xtals Type FT243 5075 thru SOSOkc 120 13 75 T465 ALT7 Xmittr lS3-352mc W 2-6101S. 100W out LN 22.S0 T465 ALT7 Schematic pp 1.00____T465 ALT7 Manual pp 2,90 CU119A Coupier 13 one-tube amplifiers w tubes . .FAIR S.25 Rt. Angle Drive w gears amp aulyersal. shaft EX S 5.00 Tube Type 6161 iv connectors. 05 Watts to 2000me .EX 7.50 TACAN Modulator Z-107 fur RT220 ARN21 w Ttibes .EX S.T5 VARIAC Type W2. 120 Volt 3.1 Amp 50-60 cycle . .NKW...

Brand New Government Surplus

Eimoc 4X150 Sockets Type SK650 no by-pass 13,105 cap. 52.50 10 r more 52.00 Elmac Air System Chimmy SK 406 3.00 Elmac Tyjc 740 Sockets for 4CX125 amp 4CX300 4.00 TUBES 5FP14A GE 3C22 3ACP7 eS. 2.00 Tube Shield Mainrtic 2-5 S 7 Scopes ea. 2.00 Train Switching Relay Type 75 SPOT 14VDC w 2SVDC 1.75 Polar Relay 2D9FA SPDT 50VDC 5 amp. , . 2.50 5 for 10.00 Antenna Relay Coax Type SPDT Cort. SO 239 26VDC 2.75 Fil. Trans. EE 115-132V fri 6V 1DA 2.00 Fit. Trans. EE 115-132V Pri 6Y 25A 4.00 Sola Pwr....

John Meshna Jr

We keep no mailing lists. Send 25t for the best 80 page catalog we have ever printed. More bargains than ever before. amateurs who are mistaldngly depending on the sleeping giant in Newington for protection. Fellows, the League isn't even a registered lobbyist for amateur radio . - . how can they possibly help you They are good at proposing rule changes to force the old timers off the air, but they can't walk into a Congressman's office and ask for help. On...

Jx

Difference frequency output. 62 GF -4FS 5Fh-3F, 4Fh-2F., 5fh-Fj 2Fh 6Fs-4Fi, 5F,-3Fh 1F.-2F,, imiIiii'i tti' 111 rTT ii Vt t i r r tti rprfi i J rrrr iVrrii1 rrfri 11 j'l iiji 11 m 1111111111 have 36 50 0.720 and 36 54 ' 0.667. Looking at the chart of Fig. I, we can see that there are three prominent birdies coinciding with the ratio 0.667. Since in all probability we wouldn't be interested in operating at a band-edge anyway, these birdies are probably not significant. However, look at...

Quement Electronics

Parallel Output Valves

1000 SOUTH BASCOM SAN JOSE, CALIFORNIA Northern California's Most Complete Ham Store SINCE 1933 R. Hillman VE7BBM 2125 Bridgemnn Avenue North Vancouver, B.C. Although it is not my intention to reopen the present DSB-SSB controversy, I have thoughts and suggestions which should alleviate much of the misunderstanding regarding double sideband. I have also suggested several ways of overcoming design problems of a workable modern DSB transmitter. The main complaint most SSB operators have against...

Receiver VFO Controlled CW Transmitter

Receiver Block Diagram

After working a contest or two it doesn't take a wise amateur long to understand that time is a premium. A kilowatt helps to bring contest points, but with the advent of highly selective receivers and crowded ham bands high power often goes unheard. Like snatching cola bottles out of the cases as the delivery truck drives by, contest operators have to be fast, smooth, and on frequency. And needless to say if we have our transmitter exactly on frequency at all times and are. taking up only one...

J

You would do very well, if you are interested in advertising, to get our official rotes and ail of the details. You'll never get rich selling to hams, but you won't be quite as poor if you advertise in 73. 73 Magazine is published monthly by 73, Inc., Peterborough, N. H. 03458. The phone is 603-924-3873. Subscription rates 4.00 per year, 7.00 two years, ilO three years world wide. Second class postage is paid at Peterborough, New Hampshire and at additional mailing...

Vebbm

A Serni-Switchless Directional Coupler Ever since I built my first Monimatch SYVR indicator, I have felt that simultaneous monitoring of the Forward and Reflected components would be desirable, 1 would all too frequently find myself trying in vain to tune for minimum Reflected only to find that I had the switch in the Forward position Or that was before I grew a third hand . . . I would get annoyed at flipping the switch back and forth tuning for a healthy F reading . . . and get a healthier R...

1966 Dayton Hamvention

HEAVY DUTY, 1 KW, CERAMIC, ROTARY, RF SWITCHES_ 5 positions wired. No stop. H shaft, 2.50 with bar knot. Continuously shorting. No stop. shaft. 2.50 Non-Shorting, no stop. CRL type Sli 0 Ceramic eapaciturs, 5 KV 25, 40, 67 or 100 Illfflf. Choice, 1.00 4 3.75 A-27 Dummy antenna, 30 ' to 4500 ICC. Steel box. 3w od s 4i4h, with cover fySklW. Has MILLEN or CABDWELL 12 to 151 mmf, 3500v variable, two 1 2 nhni, 40 w vitreulis resistors, leads, binding posts, etc. O LBS. NEW 5.00 12-151 Variable...

Would Own A

It's only natural that everyone wants the finest . . . and we feel so certain that the 2-K is OF THE FINEST that we gladly urge you to study at of the linears an lt Twe say, If you can find a better linear, buy it. When you decide on the 2-K, you can choose with confidence confidence in the company that designed and produced it. Confidence that ten years from now the 2-K will still be considered the classic in its field. Pi-L output circuit Cathode-Pi input Double rugged band change switch...

Lampkin A Fm Modulation Meter

Direct reading. Light weight. Measures peak swing 0-12.5 and 25 KC. 290.00. Quad-Seal model 340.00. LAMPKIN LABORATORIES, INC. MFH Division, Bradenton, Fla. 33505 At no obligation to me, please send me free booklet HOW to MAKE MONEY in MOBILE-RADIO MAINTENANCE and data On Lampkln meters. LAMPKIN LABORATORIES, INC. MFH Division, Bradenton, Fla. 33505 At no obligation to me, please send me free booklet HOW to MAKE MONEY in MOBILE-RADIO MAINTENANCE and data On...

Home Brew Permeability Tuned VFO

Permeability Tuned Oscillators

For something like twelve years, I've been trying to build a good VFO. Unfortunately, such is the nature of Genus Hammus that after I built each one my requirements became stricter. A friend once told me that what I wanted was a crystal with a knob on it. Actually, I've tried that, but the range is too limited. I replied, wittily, that all that I needed to build what I wanted was a case built like a battleship, a device with power gain that produced no heat, and a variable reactance that wasn't...

Tunaverter

Transistor single band tunable converters for auto and home radios. Smooth 6-1 i . planetary tuning Superior sensitivity, r.n-. i . I ledivlty, S N ration and image rejection 1 Mute terminals 9 volt battery powered MB aM All in stock Pospaid GUARANTEED WF FOR AM-FM 19.95 WITH BFO FOR SSB-CW Marine 2-3mc 160m 1.8-2mc 24.95 SWL 9-10mc 75m 3.S-4mc 160m 40m 80m 3.4-4.Imc SW 14-I8mc 20m 75m 3.8-4mc 15m 21- VHF MODELS AM-FM, 1 ri and better sensitivity Only 34.95 CB and 10m 27-29.7mc I Police 30-37mc...