I've been looking at a very low dipole to hopefully assist in receiving.
Living in suburbia space is limited but thanks to a helpful neighbor I
could put up something in the shape of an L. I would have a 90ft
straight length, then the feedpoint, then a 30ft straight length, a 90
degree turn, followed by another 60 ft straight length. Total length of
180ft approx. Running along the top of the garden fence approx 6ft high.
EZNEC 3 tells me that at 1.83Mhz the feedpoint impedance would be
0.65-j590, and at 3.52Mhz it would be 1.7+j510. How do I match it? I
could always use a relay to switch in some L for 160m and some C for
80m, then a transformer to get to close to 50 ohms, then a high pass
filter because I'm only a few hundred yards from a 50kW BC station on
690Khz, followed by a W7IUV amplifier.
Is this a reasonable approach or is there a better/simpler way?
Brian VE7JKZ
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Topband Reflector
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