[GreenKeys] Relay suggestions

[ken Schwieker]

Did anyone mention a polar relay like the 255a commonly used on 
teletype equipment?  Would work with some bias current on one coil 
and a shunt resistor across the other coil to work in a 60 ma or 20 
ma loop. As these relays are vintage, teletype friendly and plentiful 
one should fit in nicely with tube era equipment.

Ken S


>Hi All,
>
>What sort of relay would you suggest to me to put the coil of the 
>relay in series with my TTY loop that would not bog it down with 
>either too much dc resistance or LC? I need it to key a future FSK 
>unit that is keyed by shorting two terminals on the unit itself. 
>Short for mark, open for space. I will use a relay for this 
>function. The relay would also have to be fast enough to work at 60 WPM.
>
>Thank you once again.
>
>Best,
>
>Joe KB0TXC
>
>Consciousness affects the medium. Think happy, be happy, and 
>happiness will follow you.



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