Antennas

Which virtually GUAR AM TEE YOU WILL GET OUT BETTER New book gives stop by step instrui tions ( 175 pages, Over 200 illustratfons) for making all standard types (long wires, dipoles, yagis* trap, etc.) plus MANY not described elsewhere low cost miniature beams from converted TV antennas INDOOP BEAMS 'invisible an tennas 40 METER DX vertical beam* NOVICE B ND OX, many, MANY others, SECRETS of tune lid for MORE OUTPUT. How to hook up and use ANTENNA TEST GEAR. Buy book Ham Antenna Construction...

Parts List

Calrad 5-70V line transformer or equivalent. Thordarson 20A18, or equivalent 1 OK Primary, 90K Secondary. Filament transformer, 115 VAC Pri., 6 VAC Sec 1 Amp. Filament transformer, 115 VAC Pri. 12 VAC, 1 amp Sec. Rotary switch, 8 pole, 6 position, non-shorting, Centralab PA 2027 or equivalent. Rotary switch, 4 pole, 3 position, Lafayette 99 T 6156 or equivalent. Silicon power rectifier diodes 100 PIV, 1 amp. Diodes, germanium, 1N34 or equivalent. Silicon diode, general purpose type. Zener...

Info

SlOw-SCAN VIDICONS light INTE -GRATiON S STORAGE, NARROW-BAND VIDEO TRANSMISSION, WESTINGHOUSE, APRIL, 1968, RE F AVERAGE RESPONSE S4 SENSITIVITY ( 2 8 70 K TUNGSTEN SOURCE) TIMES AVERAGE P 7 SPECTRAL-EMISSION CHARACTERISTIC, RCA HB-3 TUBE MANUAL. Fig. 5. Three classes of image tube response used in amateur SSTV systems. The response of a conventional vidicon is preferred for coior analysts work, followed by the response for an S4-P7 ffying spot scanning system. scan vidicons (e.g., 6326,...

Ox Oscillator

Crystal controlled transistor type, Lo Kit 3,000 to 19,999 KHz Hi Kit 20,000 to 60,000 KHz Specify when ordering SAX-1 Transistor RF Amplifier 3.50 A small signal amplifier to drive MXX-1 mixer, Single tuned input and link output. Lo Kit 3 to 20 MHz Hi Kit 20 to 170 MHz Specify when ordering PAX-1 Transistor RF Power Amplifier 3.75 A single tuned output amplifier designed to follow the OX oscilfator. Outputs up to 200 mw can be obtarned depending on the frequency and voltage. Amplifier can be...

Teletype Converter Terminal Unit

AN FGC-IC Dual Diversity Audio RTTY Converter can be used with any type receiver. These are new and shipped in original factory crates with all spares This compact unit can be used with most Ham Receivers after conversion. Complete with conversion info and schematic. Like new condition COLUMBIA PAYS CASH FAST For your surplus military electronic equipment and ail kinds of lab grade test equipment. Write or call collect for top dollar, Highest cash offers in the country, We pay all shipping amp...

Atom Magnified Million Times

Atom is smallest unit of any element. Views shown here are those described by current atomic theory nobody has ever seen either so they may not be correct. Top view shows major parts of atom central nucleus and orbiting clouds of electrons surrounding it. Electrons orbit in shells which rep re sent definite energy Nucieus is com posed of neutrons and protons as shown in lower view. At a billion time enlargement, we could see that the nucleus resembles a bunch of grapes, and contains...

Deluxe Cygnet Transceiver Model

260 watts PXP. input on 10 through 80 meters. A complete amateur radio station including 117 volt and 12 volt DC power supply and loudspeaker in one package with a handle. Has 10DKC crystal calibrator, Dial Set A.F. Gain, R.F, Gain, AGC, ALC, S-meter, sideband selection, ail the features required for home station operation with enough power to work the world. Yet, the Cygnet is small and fight enough for mobile or portable operation an ideal traveling companion on business or vacation trips,...

Electronics

Jim Fisk Radio Amateur

Of the cost for the components of a high grade circuit. As mentioned above, T2t which is a center-tapped transformer providing two arms of the bridge, also serves the dual function of matching the output of the low-pass speaker filter to the speaker. When this was tried experimentally, it was feared that switching the filter would cause a change in the null balance, but this proved unfounded, and T2 serves its dual role beautifully. T3, the two 1 mfd capacitators and the 10k potentiometer TX...

Military Electronics

24 PAGES, crammed with Gov't Surplus Electronic Gear - the Biggest Bargain Buys In A merle a I It will pay you to SEND 2,5c for your copy -Refunded with your first order _ BC-645 TRANSCEIVER 15 ttibes, 435 to 500 Mc. Easily adapted for 2 way voice or code on Hatn, Mobile, Television Experimental, and Citizen Bands With tubes Ieeh powvr supply in factory carton BRAND NEW lOoVD SPECIAL PACKAGE OFFER B0645 Transceiver Dynaruotor and all accessaries, Including mounting UHF Antenna Assemblies,...

Wide Band Receiver

COMMUNICATIONS. . .BUG DETECTION 'f. .SPECTRUM STUDIES 38 1000 MHZ AN ALR-5 consists of a brand-new Tuner Converter CV-253 ALR in original factory pack and an exc. used, checked OK amp grtd, main rcvr R-444 modified for 120 v, 50 60 hz. The tuner covers the range in 4 bands and each band has its own Ant. input plug type NK Packed with each tuner is the factory checkout sheet. The one we opened showed SENSITIVITY 1 1 uv at 38,3 mhz, 0.9 at 133 mhz, 5 at 538 mhz, 41 at 778 mhz, 7 at 1 ghz. The...

Staff

Roger Block Phil Pripe Jane Tracey Jeanne Caskie June Trasky Whitney Tobias Carol Ring Dorothy Gibson Comptroller Joe LaVigne 4 Single Sideband AM-FM Modulation System W2BSP 10 The Transceiver Does everything but change the baby. 22 A Simple Bench Power Supply ZL2AMJ For those readers with simple benches. 28 Slow Scan Color Transmission W. Tarr and W4UMF See cover for illustration of results. 36 Fascinating Fundamentals Volta and His Piles W2FEZ 40 The Manuscript Game K6MVH Another construction...

Hz

Block diagram of CU-172A Converter. Fig, 2. Block diagram of CU-172A Converter. This converter is used to convert the 1500 to 2300 hz facsimile signals received from a radio receiver to AM signals suitable for operating the facsimile recorders like the RD-92A UX or the TXC-1B facsimile transceiver. The facsimile signal from the radio receiver is fed through an amplifier and filter