18
Here are some approximate positions of the main coil. The
measurement shown is from the top turn on the main coil to
the top of the collar.
75 Meters 5 3/8 inches
40 Meters 1 7/8 inches
20 Meters 5/8 inch
15 Meters 1/4 inch
10 Meters 1/8 inch
Due to the variables in any given installation, the position of
the coil can be different from the dimensions shown above.
The above assumes that there is a three foot long whip or its
equivalent connected to the top of the antenna. In other
words, if you attach a fiberglass CB whip to the antenna, it will
not tune the same way.
For added efficiency, a longer whip may be used. The
antenna is constructed so that an eight foot whip may be used.
Weathershield removed for
discussion only.
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