Might do a transmit power calibration on the KX3. Just make sure it is putting out the right power.
wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 30, 2017, at 3:18 PM, Dick Dievendorff <[email protected]> wrote: > > The ATU requires a certain amount of power so it can compare one SWR with > another. If there isn’t enough power, the ATU waits for it. > > 73 de Dick, K6KR > >> On Dec 30, 2017, at 14:47, Dave Sublette <[email protected]> wrote: >> >> I'm helping my son, K4TOO do some antenna work. The antenna is up and >> tunes on all bands with the KX3 on QRP. When we put the amp in line, the >> amp ATU tunes all bands, except 160. When we hit the ATU tune button on >> 160, there are no clicking sounds. The SWR remains High and the power out >> is low, I suppose because the SWR is high and the SWR protection is >> shutting down the finals. >> >> The Amp is a year old and has worked well until July. It hasn't tuned 160 >> since then. What I am trying to say is I think it is a problem with the >> amp, not the antenna. >> >> I'm not sure how to proceed. I'm away from all my tools, so I am somewhat >> limited in troubleshooting options. >> >> Anyone have any suggestions? Thanks. >> >> Dave, K4TO >> ______________________________________________________________ ______________________________________________________________ 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]

