[GreenKeys] Torn tape continuous transmissions

[Duncan Brown]

Attached is a picture of the RCA installation of FGC-1s


Duncan



On 7/25/2026 10:55 PM, Duncanancy via GreenKeys wrote:
>
> The TGC-1 was originally designed by the Postal Telegraph Co and then 
> continued by WU after they took over Postal.
>
> We have one preliminary manual and all the drawings are WU.
>
> The unit was originally referred to as a "Package Set", probably 
> because it was the first time reperfs and tape readers were packaged 
> in the same cabinet.
>
> RCA was using them on their RTTY circuits in the late 1940s, though 
> they were using them in a dual-cabinet configuration.
>
> Have fun,
>
> Duncan
>
>
>
>
> &
> Sent from my Kleinschmidt TT-4/TG, the US Army's first portable 
> digital communications device, 1950-1980
>
>
>
>
> -------- Original message --------
> From: Jim Haynes <jhhaynes at earthlink.net>
> Date: 7/25/26 20:52 (GMT-05:00)
> To: Duncan Brown <duncanancy at earthlink.net>
> Cc: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] Torn tape continuous transmissions
>
> someone was asking recently who made the TGC-1, whether it wa
> W.U. or Postal or somebody else.  I know the machines were Teletype
> but don't remember who built the sets.
>
> TGC-1 was especially a military torn tape item.  Since each cabinet
> handled one or two lines send and receive it made it easy to set up
> a relay center of any size.  Whereas the fixed stations preferred
> a sending aisle and a receiving aisle and a routing clerk in between.
> That's where you see those MXD machines with up to ten or so tape
> readers.
>
> ---
>
> "Ya can argue all ya wanna, but it's dif'rent than it was."
> "No it ain't! No it ain't!  But ya gotta know the territory."
> Meredith Willson, The Music Man
>
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