[GreenKeys] AN/FGC-30 tape relay description/photos

[Duncan Brown]

This is a picture of the US Army's West Coast Relay Center from about 
1955-60. (It was replaced by AUTODIN in the 1960s.) There was another 
similar system on the east coast (Ft. Richie, I think).

It was an AUTOMATED tape relay center. When you relay a digital signal, 
you need a buffer to hold the message while the routing is figured out 
and a open channel becomes available to relay the message on.  Paper 
tape was used as the buffer.  The AN/FGC-30 was all Kleinschmidt TTY 
equipment and the switching was done by Automatic Electric equipment.

http://www.navy-radio.com/tty-relay.htm#army for more details

Have fun,

Duncan
K2OEQ




On 1/19/2025 2:26 PM, Chuck Rehor wrote:
> Amazing photo!!! What were they all punching? The same thing to be 
> sent out to different organizations/troops/??? Or were they archiving 
> different things? How did they keep them all straight? Any idea what year?
>
> On Sun, Jan 19, 2025 at 1:17 PM Nick England <navy.radio at gmail.com> wrote:
>
>     In case you are curious, here's an FGC-30 installation. Zillions
>     of reperfs!
>     https://militarymuseum.org/Resources/USASTRATCOMNo.3InteriorRelay.JPG
>
>     Nick England K4NYW
>     www.navy-radio.com <http://www.navy-radio.com>
>
>
>     On Sat, Jan 18, 2025 at 2:10 PM Nick England
>     <navy.radio at gmail.com> wrote:
>
>         I've acquired a couple of interesting early documents on the
>         Army's FGC-30 tape relay center.
>         http://www.navy-radio.com/tty-relay.htm#army
>
>         One is a 1953 proposal to the Chief Signal Officer - it
>         includes a photo of the experimental GGC-2 system installed at
>         Fifth Army in Chicago
>         Another is a 1956 system description and includes photos of
>         the FGC-30 prototype installed at Sixth Army in Davis.
>
>         Nick England K4NYW
>         www.navy-radio.com <http://www.navy-radio.com>
>
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