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#6
September 7th 03, 10:14 PM
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"Martineau Gauda" wrote in
et: Hi, My daughter has taken an interest in short-wave and I am going to purchase the Icom R-75. The problem is that we live in the Cleveland OH area in a 3rd floor condo and cannot place an outside antenna. Without a good outside antenna is this venture doomed to failure and if an inside wire antenna is used what kind of SW or AM distant stations should be readable with such an arrangement in this area. Thanks Martineau Gauda When I was younger and lived in apartments, I use to make antenna’s from very small gauge magnet wire. Radio Shack item # 278-1345 or such, it is as small as thread. I used plastic push pins as insulators/fastening posts. Pushed 4 of the plastic push-pins in the top corners of the room ceiling, and had two more plastic push-pins in-line with the others, right above where my radio was setting, and used as end terminators for the loop antenna in this case.(start one end of the wire on one of the terminal pins and run the magnet wire around each pin, and finally connect to the other terminal pin, should have a square loop of wire when done) Then use coax, or twin lead wire for the feed-line, from the terminal connectors to the radio. You could fasten hookup clips to the feeder ends, to clip to each end of the antenna. You could make a dipole, by pushing plastic push-pins in the wall nearest the radio, at the wall corners, down a inch or so from the ceiling, and two more push-pins dead center of the same wall. You wrap a length of magnet wire from the two left push-pins, and a length of magnet wire to the right two pins, you now have a dipole antenna. You can switch between your loop antenna, and your dipole antenna, by simply switching the clips on your feed-line, to either the terminal pins on your loop antenna or your dipole. You could make different Rhombic antennas the same way using two different walls for the legs of the antenna, and connecting the feeder at the corner, where the two legs terminate. If you do not have much electrical noise in the apartment, this has always worked quite well in my case. Having an antenna preselecor/tuner/amp is nice to have in this case also. The smaller magnet wire is so small it is hardly noticeable visually. Kruppt |
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