The data sheet for the PFBrick FLARM TX/RX and PCAS/ADS-B antennas
can be found here :

http://www.linxtechnologies.com/reso...-mhw-xxx-x.pdf

One has to wonder if an antenna tuned for 915MHz is the best choice
for PCAS/ADS-B. Maybe that antenna would be best used as the FLARM RX
only antenna?

Andy