Teletype Equipment Available

I have just had a large number of Teletype machines released to me by Western Union. These are mostly page printers Model 19's, Model 15 KSR's and Model 15 KSR's in floor consoles. The machines have been in storage, and some of them are still in their original factory crates never having been put into service. Most of the remainder were given standard overhauls just prior to being placed in storage. The Model 19's are complete with printer and keyboard, transmitter-distributor, perforator and...

Line

Special converter might be built which would take the output of the fast scan camera, exactly as it was designed, and, by use of this scan converter wind up with SSTV. A few designs were developed during 1972-73, and the resultant designs were explained at some SSTV state of the art'1 hamvenlions in 1973 (Tallent, Dayton Hamvention, 1973, Suding, Cape Cod Hamvention, I 973), The design of these scan converters or tine converters as some prefer to call them) involved taking one complete fast...

Hamarama

The Mount Airy VHF Radio Club's annual Pack Rat HAMARAMA is Sunday, October 6, at the Bucks County Drive In Theatre located on Rt. 611 in Warrington PA. This is near exit 27 of the Pennsylvania Turnpike and north of Willow Grove PA. Huge flea market, auction, homebrew van, ATV demonstration, free playground for children, parking for 400 cars. Festive ties begin at 9 30AM and auction starts at 2PM - RAIN or SHINE. Food concession on the premises with nearby motels and restaurants, Registration...

Transistor Tape Recorder

Va track mono head assembly for tape. Consists of erase, R P heads, pressure pads mounted on base plate as used in MAYFAIR 1802. A steal at 1.00 each. RECORD PLAY tape heads for 8 track stereo cart & 2 track mono cassette. Your choice SI.00 each Fine for meters other LV 500 mA, Your choice S.25 earphone your choice. 2 circuits w nc sw. ,25, 5 81,00 4P 3 POS ROTARY SW 5 16 thread 1 i diameter shaft. .25 JUNK BOX SURPRISE All good parts. Quantities too small to advertise. S2.50 ASSORTED...

Hamburg International

The Hamburg International Hamfest will be held in Hamburg NY (only 4 5-minutes from Ntagra Falls), September 21, 1974, at the Erie County Fairgrounds, Fleamarket Forums Code Contest - Displays-Prizes (over S3000 in awards presented at the 1973 Hamfest) plenty to eat and drink. Admission 2 in advance, 2.50 at the gate, Si for ffeamarket parking. Recreational vehicle parking, 2.50 for the entire weekend, Children under 12 admitted free. Talkin 31 91 (WR2ABU), .94, 7.255 (ECARS) and 3,925, Other...

Equipment From

The following list of gear, unless otherwise noted, consists of brand new equipment purchased for testing purposes only. Some have been tested, some remain unopened in original cartons. We are offering this gear at a considerable discount on a first-come first-served basis. Please send Money Orders or Certified Checks only to 73 Magazine, Peterborough NH 03458. WTSHtM CikirliTw* p.L (K*I 1< IK*. S M Vvnputd Scdtr - try ID ift JOUMHj I Si 2 i R ItefPiicv IGctt tunm TMt H-LMtJ rSlDOl nn S *b...

Wire Wrap Sockets

SOMETHING NEW UNDER THE SUN THE CUBE Fully assembled sutaaudible tone generator for your smalt hand-held or portable FM radio. Works on 9-16 volts no moving parts set on any frequency between 98 and 240 Hz with a trim resistor. 0.5 x 0.6 x 0.7 19.95 Set on frequency by the factory, S5.00 extra. PS 25-1 Zero to 25 volt 1 amp lab type power supply with adjustable current limiting has remote sensing and remote programming for voltage and current. Instructions included. All parts supplied except...

Bassett Vacuum Trap Antenna System

Complete packaged multi-band antenna systems employing the famous Bassett Scaled Resonators and Balun from wh ch air has been removed and replaced with pure helium at one atmosphere. Operating bands are indicated by model designation. The famous sealed helium tilted Salun . . employed with the D6A Series Antenna Systems. Solderless center insulator and easily handles more than full legal power while reducing unwanted coax radiation. Equipped with a special SO 239 type coax connector and...

Ssb Transceiver

Look at the specifications look at Ihe price tag . ,, ask any of the thousands of Tempo ONE owners about its reliability . and the reason for its unparalleled popularity will be obvious. The Tempo ONE is now the proven ONE. FREQUENCY RANGE Alt amateur bands 80 trough 10 meters, in five 500 khz, ranges 3.5-4 rnhz 7-7 5 mhz , 14-14 5 mhz , 21-21 5 mhz.t 28.5-29 mhz (Crystals opnon lly available far ranges 23-28,5, 29-29.5r 29,5-30 mhz ) SOLID STATE VFO Veiy stable Colpitis circuit with transistor...

Zapped From Space

A note from W5LVA enclosed a clipping about NASA getting ready to test a satellite solar power station (SSPS) in 1978. This will collect energy from the sun and beam it down via microwaves - about 5 kW worth. tone to access the system. This infor mat ion is also unpublished. Remern ber, while we have a set of 450 channels assigned to us, in reality the band is open for any licensed amateur to use. All bands are. The mam difference is that we can hold a QSO for as long a rime as we desire...

Grant County

Indiana's fastest growing fall hamfest. Grant County ARC'S annual harnfest will be held September 29, 1974, at the 4-H Fairgrounds. Admission still 1 for advance tickets, S1.50 at the gate, Large flea market, technical sessions, bingo for XYLs. Large inside pavillion, plenty of parking. Talkin on 19 79 and .94, For more information on advance tickets write to W9EBN, P.O. Sox 815, Marion IN 46952. The fowa 75m Net will hold its annual picnic on Sunday, August 25, at Riverview Park in...

Kaufman Balun

With or without BALUN 1 1 impedance match Patent No. For dipoles, D219106 beams, inverted I'V. and quads KAUFMAN Center r gt striak gt f with BALUN S12 S0 postpaid USA KAUFMAN Center Insulator without BALUN 7 50 postpaid USA Qnigon Fly antenna construction sheet and drawing S25Q postpaid USA

Mullard Durham Photographs

Circuit used to calibrate SWR meters see Disconnect R5 and R6, Fig. 9, from the detectors, and connect them instead as shown in Fig. 13, One voltage is fixed at about 20 volts, and the other is varied between zero and 20 voits. The ratio of these voltages corresponds to a definite SWR which can be determined from equation 1 . Before carrying out this procedure, however, VR2 should be set for full scaie deflection of the meter under matched conditions at the highest power level to be...

Reduce Your Project Costs Moneyback Guarantee Hour Shipment All Tested And Guaranteed

2N3563 TYPE RF Amp ti OSC to 1GHj ipl 2N918 2N3565 TYPE Ge . Purpose High Gam 110-106 2N369T TYPE GP Amp to 25 mA and 50 MHz 2N386G TYPE RF Pwr Amp 12 W 100 GOO MH gt 2N3903 TYPE GP Amp amp Sw to 100 mA and 30 MHz 2N3904 TYPE GP Amp amp Sw m 100mA fTD 92 2N3919 TYPE RE Pwr Amp 3 5 W 3 30 MHz Assort NPN GP TYPES. 2N3565. 2N3H14eic. 1151 PNP 2N3638 TYPE Gen, Purpos amp Amp amp Sw 2N4249 TYPE I uw Naise Audio Amp I fiA it 50mA FET's 2N44 16 TYPE RF Amplifier tu 450 MH TO 72 2N5486 TYPE RF Amp tn...

Well Done

As a charter member of the Hate Wayne fraternity, it hurts me to say, Well Done First, I don't like to write fawning letters just to get your approval, so I won't sign it and also protect myself from the IRS Gestapo . My resistance began to crack, when I realized that, By golly, he does turn out a goodl magazine with some good technical articles and not a l that crap about contests and clubs, etc. Then came the diatribes about the IRS and FCC Walker, I thought that the IRS articles especially...

To Pn Jt

A single schcmatic, Fig. 3, is included which uses special notation to show how jumpers are connected to run on either 50 or 60Hz lines. Obviously, connect only the labeled set which is appropriate to your situation. Be sure to put in all of the needed 50Hz or 60Hz jumpers associated with IC304, 1C305, IC309 and IC215. The PC boards available through either K70L0 or W80ZA have the necessary jumper spots brought to a common socket, and a 16 pin plug is used for the needed jumpers. The scan...

From Standard

Only Standard offers you an Amateur Radio with a no-fault Life Insurance Policy that can save your radio and your pocketbook, should your Standard ever need service after its regular 180 day Warranty expires. Your out-of-warranty cost Model SR-C806 Model SR-C826 M Model SR-C826 MA Our exclusive Astropoint Radio Life insurance Poticy costs nothing at time of purchase, and will guaranty you a flat rate for repair after the regular 180 day free warranty expires. After an out-of-warranty repair, it...

Microwave Oven

Visitors to 73 Magazine seldom miss commenting on the microwave oven in the lunchroom. This certainly was one of the better investments made by the magazine and it is used every day for so many things that tt s difficult to see how one could get along without it now. Ten seconds softens refrigerator hard butter to spreading softness. A week old hard rolf in a Baggie to keep the moisture from escaping is like oven fresh in about 20seconds. If it is really hardl it can be moistened a bit before...