receiving HF antenna for urban conditions
"Toni" wrote in
oups.com:
Dave Oldridge wrote:
I'm using an 8 foot mobile hamstick horizontal off my back balcony in
a 2nd floor apartment. The noise is a problem, but I can mitigate it
quite a bit with my MFJ-1026 which allows me to have a second receive
antenna and beat it against the main transceiver antenna for the
purpose of phasing out the noise.
That's an interesting possibility but probably not useful for
multiband operation considering the antennas will be at the roof which
is 4 stories (is that the right word?) above my apartment. But makes
me think of some kind of close phased small monopoles with a separate
preamplifier for each and the phasing network down at the apartment.
Will try to do some modeling and see if it is doable. Reminds me of
the Flag/Pennant antenna. Probably too big.
Actually, any small wire whip just base fed out on the roof would do for
the noise antenna. It doesn't have to be efficient, since the unit has a
pretty high gain preamp in it for the noise antenna.
--
Dave Oldridge+
ICQ 1800667
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