Is it really necessary to isolate the vertical from the pressure treated 4
x
4 with PVC tubing and is it really necessary to install a 1:1 balun
between
the antenna and feedline in this 4-square receiving array?
With that antenna, absolutely and due to the very high impedance seen at its
base which is modified by the poor dielectric constant of the chemically
treated wood.
This goes back to ancient days when wood boiled in parrafin was a barely
acceptable insulator for OWL.
Carl
KM1H
_________________
Topband Reflector
