[Elecraft] KPA500 Issue

[Lyle Johnson]

Jim,
See page 38 of the Rev E1 KPA500 operating manual for how to set the radio
in the KPA500 menu (not KPA500 utility).  This is the current version of
the manual a available on the Elecraft website.
73,
Lyle Kk7P

On Thu, Mar 31, 2022 at 5:12 PM Jim Clymer <ws6x.ars at gmail.com> wrote:

> In my case, it was not the PIN diodes themselves, but failure of R9. I'm
> away from my shack right now, so may not have the resistor ID correct. It
> is a 48 Ohm resistor. I fixed the problem by parallel connecting a pair of
> 1/4 W, 100 Ohm resistors across the open one. Problem solved. Been fine
> since.
> There is documentation of this problem. A German ham wrote to me with a
> link to the solution. If no one steps forward before tomorrow, I'll try to
> post the info in the morning.
> 73,
> Jim -  WS6X
>
> On Thu, Mar 31, 2022, 6:40 PM Andy Durbin <a.durbin at msn.com> wrote:
>
> > "However, what I’m seeing is that when the amp is in OPER mode, my
> receive
> > signal strength drops way, way off to the point I have to go full AF
> volume
> > to hear signals. If I put the amp in STBY, signal levels go back to
> normal."
> >
> > These exact symptoms have been associated in past reports with a failure
> > of the TR switch PIN diodes.  Jack's idea of incorrect band can be easily
> > confirmed, or eliminated, by looking at the KPA500 band display.
> >
> > Andy, k3wyc
> >
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