Quote:
Originally Posted by n0jcf
If it is a genuine Teletype model 33, then it is 20mA. Teletype did not build any model
33 with RS232. They were all current loop. It would only be RS232 if there was a
current loop to RS232 converter installed inside or outboard somewhere.
Chris
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Most people didn't buy directly from Teletype Corp. and independent vendors frequently installed an RS-232 interface converter internally at the request of the customer. I'm surprised that, even though the ASR-35 was much more rugged than the 33, many more 33s survive today than 35s (at least on the used market). I suppose it could be because so many more 33s were sold, though.
Tom Lake