[MRCA] [MMRCG] AN/UGC-136BX teletypewriter bulk purchase

[Nick England]

The good news is that these UGC-136BX models do support 45 baud (60wpm).

The AX model that I have only goes to 50 baud, and we didn’t know about the
BX until the boxes were opened.

Nick England K4NYW
www.navy-radio.com


On Thu, Jul 24, 2025 at 4:16 PM Ray Fantini via groups.io <RAFANTINI=
salisbury.edu at groups.io> wrote:

> Think with all this talk about the UGC-136 stuff and the problems
> associated with them being 75 WPM or above this may be useful. Couple years
> back I was playing around with MX terminals that were 75 WPM  ASCII and
> built up converters around AY-5-1031 uart chips to do the conversion from
> 60 to 75 words per minute, also had to do language between five bit to
> eight bit but don’t think that will be an issue with the 136.
>
> If anyone is interested in any more background information let me know,
> documented the entire project at the time.
>
> You can see the MX terminal copying RTTY at:
>
>
>
> https://www.youtube.com/watch?v=tMiDnn5a_xM&t=9s
>
>
>
> Attached are two drawings showing the receive side and send side of the
> uart, remember you can do it all on one chip being each uart has a receiver
> and transmitter. I think the data levels will interface directly but never
> trued it being that I have never seen a 136 myself.
>
>
>
> Ray F/KA3EKH
>
>
>
>
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