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#6
November 4th 03, 09:26 PM
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Bob Liesenfeld wrote:
Drew wrote: When I was younger I once tied a wire around the wires of the antenna bar ( the one with a magnet and wire coil waxed onto the PC board) and strung it far out about 10 to 15 feet or even more. Once i did that I started to pick up shortwave frequencies but normal AM frequencies as well, The only problem was when nightfall came that radio was just jammed with stations. Yup, I've done this many times. The local oscillator in a typical BC set is loaded with harmonics, and the front end selectivity is usually lacking. These two 'features' consipre to bring in lots of signals.  You might also think about building a simple converter that actually downconverts SW frequencies to a dead spot on the AM dial. I have posted the schematic for a simple one he http://www.qsl.net/mnqrp/converter.htm Bob L. Please define "dead spot on the AM dial". |
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