Cecil Moore wrote:
John KD5YI wrote:
"Cecil Moore" wrote in message
A 75m Texas Bugcatcher loading coil certainly
qualifies as a distributed load being about
1/8WL long.

A 75m Texas Bugcatcher loading coil is about 30 feet long?

*Electrically*, yes. Its velocity factor calculates
out to be about 0.02 at 4 MHz and it is physically
0.563 feet long. 0.563'/0.02 = ~28 feet.

At 4 MHz, a 75m Texas Bugcatcher coil replaces ~28 feet
of wire in the antenna. That is ~41 degrees at 4 MHz.
(Note there is about 44 feet of wire in a 75m Texas
Bugcatcher loading coil.)

Equation 32 in the following IEEE paper is what I used
to calculate the velocity factor of the loading coil.

http://www.ttr.com/TELSIKS2001-MASTER-1.pdf

How well does your answer compare with the curves in Fig. 1 given the
number of turns in a Bugcatcher coil?

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