In a message dated 2/19/07 4:45:23 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
> have been told > lately that the unused antennas on the setup would pick up additional > noise. If so, it will also pick up additional signal. > Has anyone ever done any testing with multiple antennas on one > feedline to see if they really do pick up extra noise? I haven't done any scientific testing, but in actual operation (FD), I have not found any difference from a regular dipole. The principle of multiple parallel dipoles is that the nonresonant dipoles present a high impedance, so almost all of the power goes to the resonant dipole. That principle works the other way, too, when receiving. > I'm thinking about putting up new inverted V antennas on 160, 80, and > 40 meters and feeding them with one coax. Sure beats antenna > switching and it always seem to me that the signal would go to the > resonate antenna. I always used a coaxial balun in the feedline. > Works for me! How high of a center support do you have? 73 de Jim, N2EY _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
