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the quick brown fox jumped over the lazy dog the quick brown fox jumped over the lazy dog RYRYRY RYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRY

Take a look at my CORROSION TOPICS page. Lots of unfortunate mistakes and cures. Complete with closeups!!!





QST RTTY Article bibliography, click on link:

RTTY Collection (not counting most of the test stuff - yet):



    a really neat little box this: the 'MBA' stands for Morse-Baudot-ASCII, and can input any of its modes, and output any of its modes. That means you can translate between speeds on RTTY, or between Baudot and ASCII, or even between 100wpm ASCII to CW (I suppose-never tried.) It comes with a Centronics-capable printer port, and current-loop I/O, plus 5VDC ('modified') RS-232


Circuit Data Corp: CDA-770 Telegraph Signal Analyzer



    Picture by N4XY

    This test set was a purchase from Morry, K3DPJ-isn't it gorgeous? It's in as-new condition, and wonderful for testing RTTY signals of virtually any speed or persuasion. Thanks Morry!!!


Contemporary Technology, Inc (CTI): No photos yet

    This is a CW-RTTY interface, similar to the ST5.


Dovetron: No photos yet

    Regenerative TU and companion:

            Baudot- ASCII Code Translator

Electrocom Industries:

    FSK Converter


Flesher: No photos yet

  • w/factory cabinet ; plus 1 set orig.pc boards stuffed

  • w/factory cabinet;



    FSK Receiver (TU)


HAL: No photos (of MY stuff) yet for HAL

    DS-2000 KSR

    PC-RTTY Interface; Circa: 1983

    w/all extra boards (autostart/etc); Circa: 1970. Check this link to RTTY.COM for a great page on the development and workings of the ST-5-which (by proxy) also explains a lot of what's what with the ST-6:

      ST-5 / RTTY.COM

    w/factory cabinet; set of original bare, unstuffed ST-6 pc boards w/manual; Circa: 1969. RTTY.COM also really delivers on an incredibly complete description of the ST-6. Take a look:

      ST-6 RTTY.COM

    plugs-into your PC, provides all the usual modes, plus CLOVER; Circa: 1995

    low cost RTTY demodulator; Circa: 1977

    high performance RTTY demod.w/CRT; Circa: 1976

    Finally, probably the best "ordinary"  single channel RTTY TU ever made,

    Circa: 1985

    HAL Communications ST-8000  high frequency RTTY TU (terminal unit). Purchased 'surplus' several years ago, as NOS (New Old Stock), in original factory carton. It included the original, separate, operation and full  service manuals. The service manual was usually a $100.00 option.

    The current firmware revision is 2.0, which is available from HAL for ~$50.00, in the form of 2 EPROMs. Tunable in 1 Hz increments for both HI & LO frequencies, the modem in the ST-8000 is widely regarded as the best non-DSP unit ever built for a HF radio teletype TU  The current list price from HAL for this unit is $3995.00!







Also I have 6 MIL TUs: CM-14/URR; CV-57/URR; CV-483/URA-17; CV-116/URR; Northern Model 174 Type 1 Dual Diversity TU; a CV-89 from Switzerland(!) for $25 plus air freight (don't ask!) plus a U.S. Navy OCT-2 Type CHZ-60170 Frequency Shift Monitor.


  • M-14 Typing Reperf; M-14 TD; M-15 (TV-7 WX Unit);

  • Kleinschmidt TT-4B/TG: Teletypewriter, Lightweight, Portable, Keyboard and printer, 20/60 ma loop, half or full duplex, 60, 66, 75 or 100 wpm, 105-125 VAC 50-60 Hz, 97 Lbs, TM 11-5815-206-12.

  • M-28ASR

  • Mite

All the machines work except possibly the M-28... I had to just put it in storage when I got it. I also have a couple of Kleinschmidts in storage that may be worth fixing up. I obtained the TT-4B back when I was in ARMY MARS, and took the MIL refurb-depot wrapping off the box myself. It's a jewel!!!


To continue browsing the website, please select from these categories:  



 Ham Radio




and from an Electronics perspective:  

Receivers Transmitters XCVRs Accessories  Speakers QRP




Test Equipment



plus... a listing of my Receivers with their own webpages:  







       This website is always under construction...