Jim, On the power issue, maybe you want to reduce the voltage when you operate at home and keep R4 set to maximum for the sake of the internal battery operation. A couple diodes in series with the power supply should cut the voltage a bit and keep the KX1 out of the danger zone.
On your SWR/Power situation, it is hard to tell. You may want to check the KXAT1 wattmeter balance and re-calibrate the wattmeter just to be certain that is not the cause. The other thing is to take a good look at your antenna asking "What might have changed". The KX1 power reading is not precise for impedances that differ much from 50 ohms. The KXAT1 may be right at the limit of its range when matching that antenna, and if the SWR does not go down close enough to 1:1, it will vary the power indication. Yes, I know wattmeters should be independent of the SWR, but the KX1 wattmeter is quite small, and that may be the reason, but I suspect the calculation of true power is not perfect in the firmware (maybe Wayne ran out of room :-) ). 73, Don W3FPR Jim - W6VAR wrote: > Thanks Don, > > I go back and forth between the internal and external batteries, so I'm not > crazy about this as the stated life is limited for the potentiometer. Having > said that, I dialed it back to get 4 watts into a dummy load and very weak > power on internal batteries. > > Here's the strange part, my home antenna is a coax fed, parallel dipole, so > I need to run the tuner to get a match. When I run through the tuner, to a > non 50 ohm load, my power as indicated on the KX1 goes up to about 5.5 > watts! As I recall, it used to ALWAYS go down my some small amount. > > Thoughts? > > Jim - W6VAR > ______________________________________________________________ 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
