To be fair, solid state PAs are far less forgiving about match than were tubes. This is completely due to broadband design. This can be solved by including an ATU as is done with a number of Elecraft products either as an option or a feature. In the end it is about what it takes to keep the PA happy.
Sent from my iPhone > On Dec 18, 2018, at 17:00, Fred Jensen <[email protected]> wrote: > > Yep, the term was known when I became KN6DGW in 1953, but somehow no one > cared. Standing waves were sort of benign, you ran your transmission line > [often 300 ohm open-wire, or TV twinlead] to the 2 or 3 turn link and > adjusted it inwards until your TX was "loaded" to rated input power. > Standing waves formed the basis of "Lecher Lines" used to measure frequency > [well ... wavelength] generally for VHF and above. Standing waves just > didn't create the heartburn that they seem to today. Granted, today's TX are > comfortable with 50 ohms and not much else but that's just impedance matching > networks. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > >> On 12/18/2018 3:32 PM, Wes Stewart wrote: >> T. A. Gadwa, “Standing Waves on Transmission Lines”, QST, December 1942, pp. >> 17-21. >> >> Wes N7WS > > ______________________________________________________________ > 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]
