AIS Transponder Antenna Placement
I use a little coiled ariel, about 6" long similar to the ones on a hand
held VHF. It is about 20 feet up the mast and picks up pretty well
everything within about 15 miles. Simply mounted on a right angled bracket
riveted to the mast.
Normal whip VHF ariel is on top of the mast. I believe a 2m (6ft) vertical
separation is suggested as a minimum
Phil
"Larry" wrote in message
...
Geoff Schultz wrote in
:
I don't have spreaders as I have a carbon fiber mast.
-- Geoff
Keep the antennas away from that mast, which acts like a big RF resistor
and absorbs, not reflects, RF signals....
The Metz Manta 6 requires no ground plane at all and will work just fine
atop that mast and at least 12" away from it further down.
Larry
--
While in Mexico, I didn't have to press 1 for Spanish.
While in Iran, I didn't have to press 1 for Farsi, either.
It just isn't fair.
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