[Elecraft] [K3] KPA500 glitch - firmware bug?

[hawley, charles j jr]

I think the bypass is a real relay, are u thinking that the power to the relay was somehow on? I wonder if it's more likely that the relay contact was not quite conducting for receive. And turning on the amp cycled the relay wiping the contact.

Sent from my iPhone

On Apr 6, 2012, at 8:14 PM, "Carl Clawson" <carlclawson at frontier.com> wrote:

> The other morning I powered up the station to have a listen but left the
> KPA500 off. The rear panel power switch was left on and I had powered the
> amp off the night before by the front panel switch.
> 
> There was no signal getting from the antenna to the K3, evidenced by absence
> of band noise on 160 m. I turned on the amp with the front panel switch and
> then it connected the antenna. (Why did I turn the amp on, you ask? I was
> going to poke a band button and try a different antenna.) Somehow the KPA500
> had "powered down" with its T/R switch in the wrong state. I put "powered
> down" in quotes because it's a software state, not an actual physical
> disconnection of power.
> 
> I suspect that if I'd powered down at the rear panel, I would have had an
> antenna. But I'll never know unless it happens again.
> 
> 73, Carl WS7L
> K3 #486 S/W V4.48
> KPA500 #750 S/W V1.11
> 
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