[Milsurplus] AN/UGA-1 Mux, know it ?

[Nick England]

BTW the UGA-1 talked to the crypto system on one side and to a 16-channel
frequency division multiplexer on the other side which was used for HF RTTY
- 85 Hz shift on 170 Hz centers was standard for the fleet broadcast and
other HF RTTY.
https://www.navy-radio.com/rtty/ucc1/ucc1-sys-31.JPG

Nick England K4NYW
www.navy-radio.com


On Thu, Dec 7, 2023 at 4:25 PM Nick England <navy.radio at gmail.com> wrote:

> Time-division multiplexer for use with TSEC/KO-5 crypto gear - it
> interfaces with 16 channel frequency-division multiplexer for RTTY.
>
> https://www.navy-radio.com/crypto/KO5CSP6620A-02.JPG
>
> FUNCTIONAL DESCRIPTION The AN/UGA-1 is designed to accept multiplexed
> output of sixteen (16) channel multiplex equipment and divides it into
> sixteen (16) separate channels which are synchronously related to each
> other. Output on each channel is in six (6) unit synchronous signal. The
> receive portion of the equipment performs companion function.
> RELATION TO OTHER EQUIPMENT The AN/UGA-1 is designed to be used with but
> not part of AN/UGC-3() for use on frequency division telegraph systems.
> TYPE OF DIVISION: Time-division type.
> TYPE OF OPERATION: Neutral.
> TYPE OF ACTUATION: DC actuated.
> NUMBER OF CHANNELS: 16.
> NUMBER OF WORDS PER MINUTE: 60, 75, 100 words per minute per channel.
> RELATION OF CHANNELS INPUT AND OUTPUT: The 16 channel inputs and outputs
> are synchronous in nature and are synchronously related.
>
> The KO-5 crypto system is a monster-
> https://www.navy-radio.com/crypto/KO5CSP6620A.pdf
>
> Nick England K4NYW
> www.navy-radio.com
>
>
> On Thu, Dec 7, 2023 at 4:11 PM Hubert Miller <Kargo_cult at msn.com> wrote:
>
>> Anyone familiar with the USN UGA-1  16 channel TTY multiplexer, used with
>> the UGC-3 radio ?
>>
>> I have a large ‘Teletype Corporation’ preliminary instruction book, and
>> man does it look “prelim”,
>>
>> with lots of sort of unpolished drawings. Lots of transistors. This must
>> be for a VHF system, right,
>>
>> or they couldn’t put that many channels on a signal ? Can someone give me
>> the short version of
>>
>> what this system was about ? Date on manual, 1960.
>>
>> -Hue Miller
>>
>> Newport, Oregon
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