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Folded counterpoise?
I am about to make a multiband QRP counterpoise along the lines of the
one suggested in ARRL Low Power Communication at p. 6-2 -- which employs a 50 ft length of flat 5-conductor cable. Rather than use the 5-conductor rotator cable the author suggests, I want to use ubiquitous 10-conductor computer rainbow ribbon cable, .05 pitch, zip construction, 28 AWG. The author suggests a 50 ft length, which covers most bands from 10-80, with only the 80M counterpoise longer than 50 ft (it continues -- connected tail to head -- onto the next conductor for 15.7 ft.) Having five additional conductors on my ribbon cable than the author had on his rotator cable, I want to add a few bands, 160M in particular. This needs to run 131 ft, which is two full 50 ft passes and one 31 ft length -- also to be connected tail to head, head to tail, tail to head -- like a collapsed letter "Z" (or "N", for that mater). Does it matter if I put these right next to each other (i.e. 0.05" away)? Or should I separate them with a non-resonant conductor? Or what? Ken KC2JDY Ken (to reply via email remove "zz" from address) |
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