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] ______________________________________________________________ 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]
