Are all 1090mhz aerial vertical or horizontal on the aircraft, i know the aerial is for indoor use, but i see no problem putting it outdoors, some grease and waterproof tape, renew coax say every two years.
ps; as a radio ham, all my aerial are grounded,take my advice ground all aerials.
chris
I think that they are vertically polarized.
From what I can remember the only aerial on an aircraft that is vertical are the ILS antennas.
But could be wrong?