[Elecraft] KPA500 Power On

[Cady, Fred]

I have seen that happen with the KPA thought at one time is was associated with something happening on the AUXBUS - like the KAT not being powered up or something. I think maybe there was a firmware upgrade for the KPA and/or KAT that might have fixed it. Are you using the latest firmware?

Glad the KX3 is working ok to drive the KPA.  I just fired up the KXPA amp here and am going to play with it and the KPA also.


Fred Cady
fcady at ieee dot org

> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-
> bounces at mailman.qth.net] On Behalf Of Jim Bennett
> Sent: Saturday, January 18, 2014 10:26 AM
> To: Elecraft Reflector Reflector
> Subject: [Elecraft] KPA500 Power On
>
> I recently got a KX3 and have set up my station such that the KX3 can
> share the KPA500, KAT500, and several antennas by using a pretty beefy
> Daiwa 2-position coax switch. The station is set up just like the
> diagram on page 147 of KE7X's KX3 book. This configuration seems to
> work very well. However, I've recently noticed a very occasional
> anomaly with the KPA500. Every once in a while, I go to power it on and
> nothing happens. I have to reach around to the back panel rocker
> switch, turn it "Off" and then back on. Then, the front panel power on
> button brings the amp to life. So far I've not been able to track it
> down to a particular sequence of operating events that precedes it. In
> the past 3-4 days, this has happened maybe three times.
>
> Anyone else have this happen, and if so (1) what causes it, and (2) how
> to resolve it? Not a big deal, but I'd like to know what's going on.
>
> Jim / W6JHB
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