[Elecraft] QSK with the K3 and Ten Tec 425 amp

[Jim Brown]

On Tue, 8 Jul 2008 17:13:49 -0400, Jack Colson wrote:

>I tried to interface the K3 with my 425 amp as suggested by TenTec. That 
>did not work.

>Has someone done this and if so what did you do.

I did this with other rigs, but have not needed to do it with the K3.

>Now I have the K3 key out going to 425 PTT in and the amp is following 
>the keying.

This is what I'm doing and it's working fine. I have the K3 set up for 
13mS of keying pre-delay. That is, the K3 keys the amp 13mS before the K3 
produces RF. A shorter delay may work, but I'm being conservative because 
I don't want to fry vacuum relays. :) Study the addenda to the K3 
documentation to find the menu setting. 

73,

Jim K9YC