Well, that gives me something to do! I’ll let you know how it goes. Thanks, Mike NJ2OM
> On Jun 28, 2020, at 4:41 PM, Don Wilhelm <[email protected]> wrote: > > Mike, > > Congratulations on finishing the K2/100. > > On the power output variation, that is not normal. > First check the voltage delivered to the K2 while in transmit. > You should do that by tapping DISPLAY and scrolling to the voltage display. > Your power source should provide at least 13.8 volts, but higher (up to 15 > volts) is better. If the voltage shown by the K2 display during transmit is > less than 12.6, make certain all power cable connections are tight. > > If the power supply voltage is not the problem, then remove the KPA100 from > the base K2 and realign the bandpass filters. Connect a dummy load to the > base K2 BNC ANT jack. After that, check the maximum power from the base K2 - > you should have at least 10 watts on each band. Record the power for each > band. > > Using a dummy load takes away any question about your antennas. Always check > into a dummy load - with an in-line wattmeter if necessary. > > The other possibility is that you have a problem in the Low Pass Filter in > the KPA100. To check for that, re-install the KPA100, but power the base K2 > from the coaxial power jack (no power to the KPA100 - connect the dummy load > to the SO2339 jack on the KPA100. > Again check the maximum power on each band from the base K2. It should be no > more than 5% less than you found with the base K2 only. > If there is a substantial difference in power, then check the KPA100 Low Pass > Filter - particularly checking the number of turns on the toroids. > > 73, > Don W3FPR > > >> On 6/28/2020 4:04 PM, NJMike wrote: >> I did notice a variation on the power output on different bands: >> 80m - 100w >> 40m - 100w >> 20m - 80w >> 15m - 50w >> 10m - 30w >> SWR was never above 1.3-1. >> Does that sound normal? ______________________________________________________________ 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]
