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3/8x24 2 meter mobile
On Wednesday, January 29, 2014 11:15:17 AM UTC-6, R. Scott wrote:
Anyway ... Ill start with 3/4 wave of wire and wrap the 1/2 wave section in a coil and have the last 1/4 go vertical up the fiberglass ... That will be way too much coil, and not enough vertical. I think a 5/8 for 2m is around 48-50 inches or so, depending on freq. The coil will only be a few turns. If the converted base loaded CB version is 5 turns, with the thinner glass whip form, it would take just a few more turns. Like maybe 8 or so using a thin glass whip form. You could hang a 5/8 length of wire from something, and then wind a coil on a pencil or something about the same dia as the whip to get an idea on the number of turns. The vertical section up the glass must be the correct length. IE: 48-50 inches. Otherwise it will not be a 5/8 whip. With a 1/4 wave going up the whip, it's a 1/4 wave with a loading coil at the base detuning it. |
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