John, I know there were some issues with my old tube amp, but it did load enough to get me 275-odd DXCC entities with 1500W on 80 CW. The KPA has never been used in the past on 80 since I was having antenna trouble (one end was down all winter and it just got fixed today).
Everything's snow covered out the back so I don't want to play around at the coax switch at the moment. I'll try bypassing the switch when it's a bit warmer and the snow is gone. Of note, last year with the weird SWR, the "old antenna" (same physical space and height, just all different materials) was cut to 3750 and I used a tuner for the bottom end. I found the tuner kept giving me "unable to find a match" when I tried tuning with high power from my tube amp. I figured replacing every factor in that chain would fix the issue; the only thing that's the same is the antenna switch and the physical orientation of the wires themselves. New amp, new coax, new balun, new wire, insulators and even the support ropes were changed out. - pjd -----Original Message----- From: [email protected] <[email protected]> Sent: Saturday, March 9, 2019 4:55 PM To: [email protected] Cc: [email protected] Subject: re: [Elecraft] 80m KPA1500 High reflected power problems So above 3.675 it works fine? Weird. When you say it was happening previously, is that also with the KPA1500? First I would try another amp and watch the SWR. I would also try bybassing any lightning protection devices and coax relays so you just have coax and an antenna connected to the amp. GL John KK9A ______________________________________________________________ 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
