Wasn't there a debate between Maxwell and Walter Bruene (designed the Collins 30L1) on the conjugate match...I think Bruene disagreed with the popular notion of a conjugate match.
Jack BMW Motorcycles Chuck KE9UW c-haw...@illinois.edu Sent from my iPad > On Jul 18, 2020, at 3:01 PM, Gary Peterson <kzer...@gmail.com> wrote: > > You are in good company with Walter Maxwell, W2DU, now silent key. Maxwell > was an engineer at RCA. He designed the antennas on several earth orbiting > satellites and the antenna on the Lunar Rover. He explained this quite > succinctly in his book Reflections (all three editions), by use of the > conjugate matching theorem. As I recall, that chapter in his book (peer > reviewed by the RCA engineering department) was called My Antenna Tuner Tunes > My Antenna. > > Gary, K0CX > > But if the "tuner" is an LC network, like an adjustable L network, T network, > Pi network, or a linked-coupled network, then I strongly disagree. > A tuner is a 2-port network. A transmission line is also a 2-port network. > Both networks obey reciprocity, meaning that what you do to one port of the > network will have a direct influence on the opposite end. > That being said, if an antenna exhibits a complex impedance at our frequency > of interest, and that behavior can be corrected (brought to resonance) by the > application of a particular value of reactance at the antenna's feedpoint, > then that application of reactance can, for reasons of convenience, be made > at the "shack end" of the transmission line. As such, the "tuner" in the > shack is really "tuning" the antenna! > John, KD2BD > ______________________________________________________________ > 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 c-haw...@illinois.edu ______________________________________________________________ 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
