On Tuesday, June 2, 2015 at 10:37:03 AM UTC-7, kirk.stant wrote:


I have the A and B flarm antennas just over a foot apart in the nose of my LS6, wondering if I need to rethink the setup.

Kirk
66

Kirk,

Not meaning to second guess you, but as you say, the Flarm A antenna is both send recieve, while the Flarm B (optional to use) antenna is for Flarm receive only. There would be no logical reason to co-locate these two antennas in the nose of a glider as the Flarm B antenna, if used, is typically located so as to cover a null or blind spot in the Flarm A antenna's location.

Now the ADS-B IN antenna is another thing entirely. It is also a dipole and it makes a lot of sense to have it up in the nose with the Flarm A. One foot of separation is more than enough, but both antennas want to be vertical and both want to be, within reason, a good distance from other vertical metal which would cause nulls - even the coax wants to run back away from the dipole antenna at least a few inches.

I'm thinking you may be confusing Flarm B with ADS-B???

bumper