Welp, operator error big time. Got an email from Elecraft tech support and the first thing he told me to do was to unplug the RCA keyline and see what happens.
AHA! Last Friday I decided to use my IC-7300 instead of my K3 in the SKSS WES contest. Yes, blaspheme I know. The 7300 only has one key jack so I had to unplug the line going to my CW paddles and plug in a straight key. Which means fumbling around in the back of the rig blindly. I accidentally unplugged the RCA plug for the keyline to the KPA500 first. Then with out thinking plugged it into the ALC phono jack which is right next to the Key jack. Which caused the amp to do what it was doing. So I cleaned up the amp - needed some dust blown out - put it back together, hooked it back up and guess what? It works fine. 73, Bill NZ0T On Tue, Apr 14, 2020 at 9:27 AM William Carpenter <nz0t...@gmail.com> wrote: > For the second time i about two years my KPA500 is suffering from the low > RX sensitivity in OPR. Transmit is fine with full output ona ll bands. > The last time this happened the culprit was R7 on the PA unit which had > cracked and burned slightly. Elecraft sent me a new R7 very quickly and > for free - the usual great customer service. I installed it and the amp > was fine again. > > It happened again last night so I took the PA unit out this morning. R7 > looks fine and tests fine as do all the associated components. So, I'm at > a loss. The only thing I can think of is that my ugly SMT solder job has > gone bad - is OK with the meter but breaks down under normal voltage and > current. Is that ever an issue with SMT? I don't know mush about SMT > stuff. > > I have an email sent to Elecraft service so hope to hear from them > sometime. Not sure how responsive they can be in lockdown. > > I should mention this amp was purchased as a new kit in 2016. > Any input is appreciated! Especially as to what may be causing this to > happen > > 73, Bill NZ0T > ______________________________________________________________ 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
