[Elecraft] K3 keying Alpha 374A/76A

[Don Wilhelm]

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.
>   
>