QSK with the K3 and Ten Tec 425 amp

[Jack Colson]

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.

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

In the Ten Tec method, you connect the key to to amp and have it send a
keyed signal to the key input on the K3.

Not a big deal but an interesting test.

Thank you ,
73
Jack, W3TMZ

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[Jim Brown-10]

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




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