Brian, you are correct RF is RF, for all practical purposes that will be no detectable difference between AM or SSB for amateur use. however, I have little faith in the efficiency of so called multiband antennas. I strongly favor a " simple dipole" or a wire about 1/2 wave or more fed in the center with open wire feeders from a good tuner like the old Johnson match box. It does sound like your antenna is very low and that has a major impact on impedance and bandwidth. sure would help if you could get it up to 40 feet or so. There have been some interesting cases with short loaded antennas in the BC band, the bandwidth has occasionally been so narrow that the AM sidebands become attenuated! Not going to see that effect in the amateur bands unless someone is running an antenna only a few feet long!! I assume you are feeding with coax, hopefully the large stuff like RG8. If there is a balon transformer involved, they really do not like strange impedance loads attached to them. They really are a transmission line transformer and have been misused horribly! Bernie W8RPW
----- Original Message ----- From: "Brian - KF5CCN" <bzwie...@sbcglobal.net> To: <AMRadio@mailman.qth.net> Sent: Monday, June 21, 2010 8:56 AM Subject: [AMRadio] Antennas >I have a Carolina Windom Dipole I use on AM and SSB, oriented with ends N/S >at about a 30 deg. downward slope and ends 4 ft. above ground. I get good >reception and coverage all around the compass. But on AM I seem to be week >on AM toward Dallas and Oklahoma. I "boom in" on 75 meters in Dallas, OK, >LA, MS, and other states. > Is there a particular antenna and/or antenna configuration that is more > effective on AM? I know RF is RF, but, I am still learning. > > Thanks and 73 > Brian/KF5CCN > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio@mailman.qth.net > To unsubscribe, send an email to amradio-requ...@mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
