KPA500 adds attenuation in Operate

[Richard Lawn]

For some unknown reason when I switch the KPA500 to Operate the receiver in
the K3 acts like I've activated attenuation. I've obviously made some
change in a menu somewhere but I can't sort it out.

SWR continues to read fine and power output is also fine.
Any suggestions on what might be wrong?

Rick, W2JAZ
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[Iain MacDonnell - N6ML-2]

On Sat, Mar 10, 2018 at 3:00 PM, Richard Lawn <[hidden email]> wrote:
> For some unknown reason when I switch the KPA500 to Operate the receiver in
> the K3 acts like I've activated attenuation. I've obviously made some
> change in a menu somewhere but I can't sort it out.
>
> SWR continues to read fine and power output is also fine.
> Any suggestions on what might be wrong?

Happened to mine years ago. T/R PIN diode failure was suspected. A
replacement RF module fixed it.

GL/73,

    ~iain / N6ML
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[Richard Lawn]

Ignore my message as I've found the problem. Had the PTT line from AmpKeyer
to K3 plugged into the wrong jack! I had moved the radio to a friends
recently and I apparently didn't put things back the way I had them.

73
Rick, W2JAZ

On Sat, Mar 10, 2018 at 6:31 PM, iain macdonnell - N6ML <[hidden email]>
wrote:

> On Sat, Mar 10, 2018 at 3:00 PM, Richard Lawn <[hidden email]> wrote:
> > For some unknown reason when I switch the KPA500 to Operate the receiver
> in
> > the K3 acts like I've activated attenuation. I've obviously made some
> > change in a menu somewhere but I can't sort it out.
> >
> > SWR continues to read fine and power output is also fine.
> > Any suggestions on what might be wrong?
>
> Happened to mine years ago. T/R PIN diode failure was suspected. A
> replacement RF module fixed it.
>
> GL/73,
>
>     ~iain / N6ML
>

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