can it be done effectively on vertical antennas,
if we isolate the antenna from the mast, add 4 or more 1/4wave radials at the feedpoint and an ugly ballun?,
i have read that doing that is not nearly enough to attenuate counterprductive currents flowing on the mast and the outside of your coax spoiling your theoretical radiation pattern,
my own tests using the a99 showed a notable increase in signal reports after isolating the antenna and using an ugly balun with just 2 wire 1/4wave sloping radials, it also seemed to significantly lower rfi in my friends shack,
has anybody else here experimented with similar ideas?
is there a more effective method of minimising the effect of the mast and feedline?
if we isolate the antenna from the mast, add 4 or more 1/4wave radials at the feedpoint and an ugly ballun?,
i have read that doing that is not nearly enough to attenuate counterprductive currents flowing on the mast and the outside of your coax spoiling your theoretical radiation pattern,
my own tests using the a99 showed a notable increase in signal reports after isolating the antenna and using an ugly balun with just 2 wire 1/4wave sloping radials, it also seemed to significantly lower rfi in my friends shack,
has anybody else here experimented with similar ideas?
is there a more effective method of minimising the effect of the mast and feedline?