The halfwave coax idea may have originated in the CB world where antenna theory = voodoo arts. May have something to do with getting a repeated SWR reading at the feedpoint when read at the radio...this only would be true for a very limited range of frequencies ie, one band.//
If your antenna is trimmed for near 50 ohms with not much reactance at the feed point, ANY length of 50 ohm coax will work, the shorter the length the lower the loss will be.
SO...the shortest length that reaches from the antenna to the radio is the BEST length.
For non-resonant antennas, this is a different case alltogether, the length of balanced line can be part of the Z matching system and can be critical.
73.....JD, FISTS #3853,cc 455,SKCC # 1395,tribune #12,
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