Mine has never started up in ‘Operate’ mode. Could it be a setting you imposed?
Sent from my iPhone ...nr4c. bill > On Nov 16, 2018, at 2:19 PM, Luis V. Romero <[email protected]> wrote: > > Michael: > > The KPA500 defaults to power up in STANDBY but is programmable to power up > in OPERATE mode. Someone must have changed yours. > > The KPA500 can also be programmed to switch to standby on band changes. It > defaults to selecting STANDBY or OPERATE per the last band change. > > When connected to a K3 using the KPAUX cables, the amplifier and the radio > communicate and the radio will reduce power when you switch the amp to > OPERATE. > > I run mine in Power up: STANDBY, Band change: Switch to STANDBY. Its harder > to do stupid things in this configuration. I'd rather accidentally transmit > at 100w than blow the amp up. Also, my KAT500 tuner can auto bypass the amp > if the SWR reaches 2.5:1 threshold to protect the amp. This is also > programmable. > > The menu settings for all of this are in the KPA500 Operations Manual on > page 19. BTW, there is no T/R relay to click in the amp. It uses PIN Diode > T/R switching. When you key the amp, and if you have it connected to the > same PTT as the radio, you should see an asterisk (*) in the LCD window that > tells you the amp is "keyed". > > You may have blown up the input attenuator. Or the RF deck. Or both. As a > machine I used to work with said when its power supply was overheating: "$$$ > UP IN SMOKE!". > > 73 > > Lu Romero - W4LT > > > > > From: Michael Walker <[email protected]> > To: Andy Durbin <[email protected]> > Cc: "[email protected]" <[email protected]> > Subject: Re: [Elecraft] Killed the KPA500 :) > Message-ID: > <CA+33ts5vyMXY7o1vHi=8honax4cklskhhfyr8te4-qyf8se...@mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > I have the schematics, as someone was kind enough to send them to me. > > Yes, I forgot the KPA500 powers up in Operate. It is the only Amp I own > that does this. > > I will mention it to Elecraft when I chat with them later today and suggest > the default should be the other way around. > > Mike va3mw > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
