There are at least two other ways of knocking down interference from nearby AM broadcast stations. Each requires the choice of a particular type of antenna.
The first is to use a balanced tuner of the link-coupled type (the Johnson Matchbox and Annecke Coupler are the most famous examples) which has a highpass response and can add some 30 dB to reject AM BC signals. The second is to use a small transmitting loop (STL) which has a very narrow bandwidth and rejects all signals more than a few kHz away. Al W6LX > If a station is very close, you may have to use a filter at the shack > end of the feedline to notch it out. ______________________________________________________________ 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
