I just tried to tune up my L4-B on 17M using the KX3 as the driver. I noticed the power output was less than the nominal 200 watts that I have been getting. I checked the output power of the KX3 and it too was down, about 7.5 watts. I checked to make sure it was matched with the ATU and that checked OK. I checked to see what power level it was set to and that was 10 watts. Next, I tried bypassing the amp and tuning into a dummy load. Below 20M it will put out 10 watts full power. Above it is less than full and output power decreases as I go to higher frequency bands, i.e. 15,12,10,and finally 6 with the lowest power out at 3.2 watts into a dummy load.
I checked the voltage reading on the KX3 and it only dropped 0.3 volts from 13.5 to 13.2 volts. I am sure I had full power into the L4-B last night on 20M. Does anybody have any ideas as to what may be the problem? Denis WA5TYJ KX3# 452 ______________________________________________________________ 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
