NEW

Phase Corporation is marketing, as a kit or wired and tested, its low-cost solid-state test oscillator, which generates square waves, pulses, or sawtooth waveforms from 0.1 Hz to 100 kHz, Portable and compact, the package contains FE and unijunction circuitry to cover the operating spectrum in six continuous ranges. In the kit form, which sells for 34-95, all parts are included transistors, diodes, switches, etched and drilled printed-circuit board, custom cabinet with screened and punched...

Info

The 14 N OT-TOO-T E C H NIC A L MANUAL bit is especially right. Did you check pages 62 through 67 The guy (Bob Manning K1YSD) must be sick. Everett G. Taylor W6DOR ilOO Worthington Dr, North Highlands CA A couple of things. 1 irst. as a professional communication engineer. 1 am enjoying those Extra Class articles, But teli me, what little gremlin, or type lice, made off with the letter Y in Table I on page 101 of the February issue Especially since RY is one...

Kqs

1 enclose 50 cash, Don t forge t to send my free Deluxe atlas (U.S. only) f Send to 73 Magazine. Peterborough, N. H, 03458 I aheadv subscribe, and hereby extend till death us do pa t, a ni not already a subscriber .Other S am Kelly W6JTT 12811 Owen S tree I Garden Grove CA 92641 With the spectrum being shared by such agencies as state police, highway patrol, and the sheriff, there should be a lot to listen to . . , onitoring police and emergency common i canons channels can provide fun and...

T

I i it*r. (4 n m. t h 'I w. i c** **., flu II *> - 11-1 '.'Mi -w-i.i -' I* 1 Military Hams to Award Armed Forces Day Certificates On Saturday, May 16, 1970. WA9DZL, amateur station of the 128th Air Refueling Croup (TACK Wisconsin Air National Guard will place rudio equipment on the hum bands in conjunction with Armed Forces Day. An at tractive commemorative Armed Forces Day certificate will he mailed to all hams who contact WA9DZL on tins day. The operating schedule is as follows 14.297...

Faraoay Screen

Fig. 8> Electrostatically shtelded inductive coo pling. Fig. 8> Electrostatically shtelded inductive coo pling. Combining these two methods gives us Shielded link coupling, which is particularly effective against harmonic transfer. It is (he same as link coupling, except that each link is electrostatically shielded from its associated coil. Unfortunately, this technique is often considered too cumbersome for ham use. Possibly the most effective of all interstage coupling schemes, so far as...

Henry Radio

For three years Henry Radio has been providing a beam antenna-tower program for amateurs who wanted an efficient, but economical package. A package pre-engineered, pre-matched and pre-packaged to his requirements and pocketbook. Thousands have benefited from this offer in the past. And now Henry Radio has researched the field and up-dated the program including the unique new tubular design Mini Mast for less expensive installations and the great new Magna Mast for the more deluxe installations....

Foot Parabolic Dishes

Spun Aluminum, Some in original crates. Frequency range 4 50 MHz to 8.5 GHz, No feeds available. Feeds available from he manufacturer or can be fabricated. 100. FOB Topeka FM Engineering, 3501 Croco Rd. Topeka KS 66605. SOMERSET COUNTY HAMFEST The 5th SCARC Annual Hamfest will Im> held Sunday June 7 at the Casebeer Grove 4 miles north of Somerset, Pa. on US Route 219. Registration starts at noon. Rain or shine Free tables indoors for swap-shop. Write K3YVS, 719 Division Street, Berlin PA...

M

Price 2 per 25 words for noncommercial ads 10 per 25 words for business ventures. No display ads or agency discount. Include your check with order. Deadline for ads is the 1st of the month two months prior to publication, For example January .1st is the deadline for the March issue which will be mailed on the lOLh of February, Type copy. Phrase and punctuate exactly as you wish it to appear No all-capital ads. We will be the judge of suitability of ads. Our responsibility for errors extends...

G

Now available to provide super selectivity for your Swan Transceiver. Easily installed in models 240, 260, 270, 350, 350C, 400, 500, and 500 C. Unprecedented rejection of adjacent channel QRM, 16 poles. 16 precision crystals in a lattice filter network. Carrier suppression 45 db with the filter alone, plus approximately 40 db more from the balanced modulator. Mounting Same as standard Swan filter, but taller. transceiver model. See your Swan dealer to lt Today we take or granted shape factors...

S

Complete VTR Recording System ALL BRAND NEW 1 - Norelco VTR EL3401 A 54 585.00 1 - TV Camera TK-204 VD-4 169.95 and 1 Canon TV-16 1 F1.4 Lens S39.95. Value S794.90 - Special Package Price S749.95 Stock 5000-WG. Shipped via RE A or truck, chgs. collect. Details flyer 970J2.

Fm Mobile Transceiver

MH m 2-Channel trunk mount RCA rig in perfect condition. Fully duplexed and operating as a mobile telephone-Includes transmit crystals for 142,12 and 442,05 receive crystals for 448,82 and 448,85, Crystals are from Sentry and are enclosed in ovens. Complete less control head and cables 100, Will throw in two 4 dB Com Prod mobile gain antennas. Ken Sessions K6MVH 1 RFD 2, Peterborough NH 03458, FM MOBILE PORTABLE TRANSCEIVER 2 meters, Varitroriics FDFM2. Perfect for repeaters. Six...

Rohn

310 Quincy Street, Reno, Nevada 89502 Phone 702-322-9300 Eastern Office P.O. Bo 2101 Hanover Mass. 02339 Phone 617-826-25U P.O.Box 6537, Birmingham, Ala, 35217 Phone 205-84M739 vert with the large choice of SSB gear on the market today, there are still many amateurs who enjoy transmitting and receiving a well modulated AM carrier. This is especially true in the field of mobile radio. A quick check of 10 meters will show that AM QSOs are available in number, and that most are from mobiles...

Park Electronic Products

Swinging public servicc back from CB to ham radio. Only hope the League isn't too blind to see this obvious fact nor too set in their ways to realize FM's potential to rescue amateur radio, I am confident in you and your staff to provide interim leadership and technical information until Newington's Ponderous Pachyderm starts to move. Can anything kill their apathy We agree that FM has the potential to nuJiify the inroads made on public service by CB - which could prove highly beneficial to...

T Ra Md Vrc Trc Urc

Piease send us you surplus inventory fists. We want to buy other tubes and Transceivers - Receivers Test Equipment, 308 HICKORY ST ARLINGTON, N. J. 07032 i 30, count 'em 30, stupendous tremendous more handbooks than magazines fascinat ing enormous devastating incredibly enervating back issues of 73 sonti us S5 in negotiable securities, cash or check and we will send you an unbelievable miscellany A y of thirty different all uj V different back issues, yy SfiF all from the 1960-1966 era. These...

We Pay Highest Cash

For Electron Tubes amp Semiconductors Elizabethport tndujtnai Park Elizabeth, New Jersey 07206 201 351 4200 N mi left it olit of the 14 ITY lisi on page 101 of the eb-ruary 1970, 73 Magazine, And 'Y1 is so important - it's the other half of RY one of w most familiar terms in R i I Y. 31 Cowan Avenue St. John's, Newfoundland Yoiks Y is coded 1-3-5 and it most assuredly is one of the important letters for TT'ers. i relative nfewcomer to amateur radio and j subscriber to your magazine I am only...

Full Galaxy Line

GT-550 80-10m Transceiver AC-400 110 23QV AC Supply R-530 ,5-30MHz Receiver SC-530 Speaker Console FL-53015 l.SKHz Filter FL-5306 GHz Filter FM-210 2m FM Transceiver AC-210 AC DC Booster . To AMATEUR ELECTRONIC SUPPLY 4828 West Fond du Lac Avenue Milwaukee, Wisconsin 53216 I am interested in the following new equipment I have the following to trade what's your deal I enclose --- i will pay balance if any COD 20 deposit Revolving Charge Plan R.L. Crawshaw WA0NGV 1715 Northeast Parkway Wichita KS...

U

Pat Cabell WA7EMM 79 Newcomer Road Richland WA 99352 available in two surplus markets commercial amp military IV1 ow that you have read all the fine JLH articles in 73 Magazine about the fun of FM, let's talk a bit about the kind of mobile gear you are going to get. This surely deserves a lot of talk, for there are some surprises in store for the unwary. You hear about a fine piece of gear made by Motorola or GE, and you take a look and you generally see a monstrous contraption loo big to get...

Mcu

Features a typical input capacitance of 2.5 pF and a crosstalk figure under The MCII25G is recommended for frequency synthesis, as required in organ circuits, digital dividers, and counters. Motorola Semiconductor Products In t r PC Box 20912, Phoenix AZ S5036. Two FM receivers for operation in the 50 and 144 MHz bands feature a complete assortment of optional equipment, including a sequential tone alarm decoding facility. The radios are available in four model designations. Model TM II-H1 has...

John Meshna Jr

19 ALLERTON ST., LYNN, MASS. 01904 P. O. BOX 62, E. LYNN, MASS. 01904 another group form similar to the ARRLV but with more progressive ideas and better representation of the amateur body. Certainly others in hamdom must entertain this idea. You have the vehicle in 73 lo bring them together why not do something in a positive direction about it We have a two-party system in government - why not the same in ham radio Wayne - In your article 'Tl U Conference Who lobbies for Ham Radio 1 think you...