[GreenKeys] Backup system for TTY

[William Wuttke]

Very cool.... When I was stationed at Andrews AFB, MD, at the Presidential
Aeronautical Station (Ground to Air to Ground Radio Comms to Air Force 1)
we had pneumatic tubes connecting the station to the base Comm Center for
teletype tapes. We had M28ASRs for RTTY to/from Air Force 1. It was really
a trick keeping the HF RTTY circuits running.

Bill
KE3BK

On Sun, Jan 2, 2022 at 2:00 PM steve bennett via GreenKeys <
greenkeys at mailman.qth.net> wrote:

> We should consider a backup alternative to TTY.
> I suggest maybe pneumatic tubes.
> I was surprised to learn these were not just from point A to point B.
> You could encode an address on the tube and switching stations would route
> it
> to the desired location.
>
> Fascinating stuff.
> Secret Marvel: NYC's Pneumatic Mail Tubes
> <https://www.youtube.com/watch?v=qxFBsC3-2Gw>
>
> Secret Marvel: NYC's Pneumatic Mail Tubes
>
> <https://www.youtube.com/watch?v=qxFBsC3-2Gw>
>
>
>
>
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