K2 full power delay on CW

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K2 full power delay on CW

J.A. Wolf, MD, K6JW
I recently acquired a used K2 (looks nice next to my K3), but I've noticed something that might be of concern with it. When I enter CW mode and key down for the first time, there's a short delay (a split second) for the power to come up to full output, as indicated on my Alpha wattmeter. For instance, if I'm set to full 100 watt output, initial key down might start at 92-94 watts and then quickly go to full output. After the initial key down, all further sending puts out full power instantaneously. If I change modes and then come back to CW, the first key down will cause the behavior to repeat. This doesn't seem to be a big problem -- I'm getting excellent signal reports -- but I'm curious as to whether I should be concerned. Has anyone else on the reflector seen this?
--Jeff, K6JW
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Re: K2 full power delay on CW

Vic K2VCO
This is entirely normal and is a result of how the K2's transmit AGC
loop works.

Get back on the air!

On 4/27/10 7:31 PM, J.A. Wolf, MD, K6JW wrote:

> I recently acquired a used K2 (looks nice next to my K3), but I've
> noticed something that might be of concern with it. When I enter CW
> mode and key down for the first time, there's a short delay (a split
> second) for the power to come up to full output, as indicated on my
> Alpha wattmeter. For instance, if I'm set to full 100 watt output,
> initial key down might start at 92-94 watts and then quickly go to
> full output. After the initial key down, all further sending puts out
> full power instantaneously. If I change modes and then come back to
> CW, the first key down will cause the behavior to repeat. This
> doesn't seem to be a big problem -- I'm getting excellent signal
> reports -- but I'm curious as to whether I should be concerned. Has
> anyone else on the reflector seen this? --Jeff, K6JW
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Please help support this email list: http://www.qsl.net/donate.html