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I am leaning towards the 1/4 wave or perhaps an 1/8 wave?


think about it back when the astro plane was designed they took into account the height restriction of cb antenna, which was 20'.  You take a 20' foot mounted 1/8 wave and

you have a 5/8 wave.


so i really think it is much closer to 1/4 or an 1/8 wave

the difference if it is one or the other was the "electrical" difference.