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LF/MF
Not much response regarding antenna development on
9 kHz apart from active probes and small loops.
My approach is a proper resonant antenna,
verticals, long wires etc and resonant on the freq of interest, giving
more sensitivity and a sharp response, keeping out qrm from adjacent
frequencies.
I am referring to RX antennas at this
stage.
If qrm is as bad as some say around 9 kHz then
small loops and active probes will only amplify the noise as well as
signal, whereas a natural resonant antenna will eliminate a lot of noise
from adjacent frequencies and peak the signal at the frequency of interest
as stated above.
de mal/g3kev
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