Scott,
The K3 KEYOUT can handle up to 200 volts as long as it is a positive
voltage. So +20 volts is no problem.
I cannot comment on the delay settings, I don't have an Alpha amp.
73,
Don W3FPR
On 11/3/2015 9:51 AM, Scott via Elecraft wrote:
Out of an overabundance of caution I thought I'd ask first....
My manuals for my old Alphas suggest the amplifier keying line is 20
something volts DC +, and the K3 manual says I can key way more than that + DC.
So I just wanted to confirm (or learn more):
1) I shouldn't worry about any kind of an outboard relay system, and
2) was curious if there is any other advice re delay settings etc. when
using the K3 with old Alphas like the 374A and 76A.
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