K. Rice wrote:

Is there any reason not to use an outboard keyer (older Idiom K-3) to key the Titan via its KEY IN jack and then use the TenTec's KEY OUT
jack to key the K2 via the K2's key jack with InP = HAnd?

You can certainly do this, or you can add an amplifier keying circuit (see <http://www.elecraft.com/Apps/Amp_keying_ckt.htm>) to your QRP K2 and have the K2 key the amplifier directly. The amp key circuit is based on the 8r line which keys the amp 10-15ms before RF appears, and can be adjusted for a desired hold time afterwards. Then you can use either the internal keyer or the Logikey.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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