Spider Coil Form
say enough about the performance of these antennas. There are
tons of instructional websites out there to assist in
making one. I used 24
gauge wire and had to wrap 18 turns to get an inductance of
about 250 uH. With a 365 pF Variable air capacitor,
the tuning is so sensitive you have to be careful to not pass stations
as you are tuning it. I wanted it to be 18" tall and wide so
used the simple formula.
a² + b² = c²
This put my diagonals at around 25.45 " long.
is the 365 Variable air capacitor. I used my router to
sink it 1/4 inch and on the back side I have a nice piece of brass to
accent the whole project.|