[Elecraft] Silly question - what is KEY OUT?

[Don Wilhelm]

Kieth,

 From page 17 of the manual
"KEY OUT (RCA/Phono) is the amplifier T-R relay
keying output, capable of keying up to +200VDC
@ 5A."

KEYOUT-LP at pin 10 of the ACC connector is similar, but the max voltage 
is lower and it is limited to 10 ma.

73,
Don W3FPR

Darwin, Keith wrote:
> What is this output?  Is it a source or sync?  It it a switched 5V 
> logic level or is it a relay closure line that switches from open to 
> short?
>  
> - Keith N1AS -
> - K3 711 -
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