I might have to disagree with FLARM's statement, "The FLARM antennas have priority over this [ADS-B] antenna for best placement."

I think that early detection of a 1,000 lb FLARM equipped glider closing at 100kts should probably take a back seat to early detection of a 62,000 lb ADS-B equipped 737 closing at 400kts. Just sayin'

There are caveats to that statement of course. There are low risk and high risk ADS-B traffic areas. But you aren't going to move your (FLARM and ADS-B) antennas around based on where you are flying this week. So I would think that you should place your antenna based on the worse case threat scenario = a high speed and hefty flying bomb. Just sayin'

My $0.02 - John "OHM"