Well, it depends on the “Dummy” load. Have you swept the load with a good spectrum analyzer or VNA? It may not be 50 ohms at 50 MHz
Sent from my iPhone ...nr4c. bill > On Sep 12, 2020, at 11:51 AM, Drew Arnett <arnett.d...@gmail.com> wrote: > > After getting my KX3 back from repair (before my next planned contest > operation, thanks!), I ran some measurements to both see how great the > repairs were and to get a new baseline for future measurements. TX > efficiency problem was gone. > > However, I'm left to wonder about the accuracy of the internal SWR > meter for 50 MHz. Using a microwave dummy load of adequate power > rating and just a coaxial adapter, I measured the following: > > 14 MHz @ 1 W setting > VSWR 1.0 to 1 (per KX3) > > 28 MHz @ 1 W setting > VSWR 1.0 to 1 > > 50 MHz @ 1 W setting > VSWR 1.5 to 1 > > 50 MHz @ 4 W setting > VSWR 1.6 to 1 > > Not horrible. Not great. > > It's fine if it's not as accurate on 50 MHz. I just want to know if > this is normal. Has anyone else looked at that and can share what > they see? > > Thanks and best regards, > > Drew > n7da > ______________________________________________________________ > 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 > Message delivered to n...@widomaker.com ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
