[Elecraft] Silly question - what is KEY OUT?

[W6NEK]

Hi Keith,
>From the K3 Owners Manual (Page 17):
KEY OUT (RCA/Phono) is the (linear) amplifier T-R relay keying output, 
capable of keying up to +200VDC @ 5A.

Manual Index  "KEY OUT": Pages 17, 19, 57

Best 73,
Frank - W6NEK

----- Original Message ----- 
From: Darwin, Keith
To: elecraft at mailman.qth.net
Sent: Thursday, January 22, 2009 8:57 AM
Subject: [Elecraft] Silly question - what is KEY OUT?


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 -