WOW Bob K3DJC
On Wed, 10 Oct 2012 20:32:58 -0400 Don Wilhelm <[email protected]> writes: > Randy, > > What you say is true only if working into a load that is not > frequency > selective - like a dummy load. > If working into an antenna, that will be frequency selective and any > > harmonics will increase the SWR indication. > > 73, > Don W3FPR > > On 10/10/2012 8:17 PM, Randy Farmer wrote: > > It's pretty unlikely you'd see harmonic content on any kind of > broadband > > power sensor like a SWR meter. Even if the transmitter was really > bad > > and had harmonic levels only 40 dB down, this would mean for 100 > Watts > > output you would be getting 10 mW in harmonic energy, which > wouldn't > > wiggle anybody's meter very much. And if the total harmonic power > at 40 > > dB down was just equal to the reflected power from your antenna > > mismatch, this would mean the antenna would have a VSWR of 1.07. > My > > money's on diode nonlinearities at low power levels. > > > > > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
