[GreenKeys] RTTY Test Equipment

Alf Fisher alf_fisher at tiscali.co.uk
Sun Dec 12 04:46:48 EST 2010


Hi Tim,
Remember them, I've got one but I've never tried it out.
Must do it someday soon.

Alf
G3WSD


----- Original Message ----- 
From: <73131.3073 at compuserve.com>
To: <greenkeys at mailman.qth.net>
Sent: Saturday, December 11, 2010 8:04 PM
Subject: [GreenKeys] RTTY Test Equipment


> Speaking of TTY Test Equipment – Does anyone remember theTDMS units? They 
> had a 3RP1 display tube, which presented a spiral display! Thepower supply 
> was attached at the back end of the unit. Inside was a mechanical(!!!) - 
> yes, mechanical message generator!!! It was a round printed circuit 
> typedisc with a message encoded on it!!! They were great if you could keep 
> themgoing!
>
>
>
> Tim Swarthout, WA5QEG
>
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