On Tue, Nov 13, 2012 at 1:13 PM, Richard Fjeld <[email protected]>wrote:
> ...even a good radio needs a resonant antenna..... > ============= It's true that reception is often better if the antenna is matched, but this doesn't mean that the antenna has to be resonant. An antenna's resonance or non-resonance does not determine its gain or directivity. It only determines whether or not it presents a reactive load at its input terminals. If an antenna does present a reactive load, a tuner can match it so that the receiver sees the correct resistive impedance. You will hear a lot more with a non-resonant curtain, rhombic or log-periodic aimed in the right direction than you will with a resonant ground-plane. A half-hour spent with EZNec looking at the gain and radiation patterns of long-wire antennas of various lengths will dispel many misconceptions. Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 ______________________________________________________________ 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
