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January 18th 06, 10:26 PM
posted to rec.radio.shortwave
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Coax Suggestions ?
Robert11 wrote: Hello: Will be putting up an outdoor Listening-Only antenna. (30 MHz, on down) After the outdoor Balun and Lightning Arrestor, it looks like I will need pretty close to 100 feet of coax to get it to the receiver. Can anyone suggest what might be the lowest cost coax that will not exhibit any "meaningful" attenuation for listening only at around 30 MHz ? I don't have a good feeling on how to evaluate the db losses for the individual types with regard to what is, and is not, meaningful for listening. Don't mind spending another 50 cents or so per foot, but would like to not do it unless it would really offer an improvement. Also, guess I would like the smallest diameter possible, but this, of course, would be a secondary consideration Is the Wireman Company: considered a reputable, and good, source for ? Others ? Might as well also ask this while I'm at it: re those metal mesh Kellums for supporting a wire- If placed over the active antenna wire (not the coax), is there any "shorted-turn" effect phenomenon to be considered ?. Attenuation charts: http://www.universal-radio.com/catal.../coaxperf.html http://www.qsl.net/yo5ofh/data_sheet...cal%20data.htm http://www.bcar.us/Coax%20Cable%20Specifications.htm dxAce Michigan USA |
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