Read above... On Fri, Nov 16, 2018 at 8:17 PM Nr4c <n...@widomaker.com> wrote:
> 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 <lromer...@tampabay.rr.com> > 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 <va...@portcredit.net> > > To: Andy Durbin <a.dur...@msn.com> > > Cc: "Elecraft@mailman.qth.net" <elecraft@mailman.qth.net> > > 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:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to n...@widomaker.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to va...@portcredit.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
