I'm finding this DRX to be very weak when picking up ADS-B traffic. I'm 8 miles from a tower, and sitting side by side with the Dual XGPS170 which I'm hoping to replace (using a thumbtack instead of an antenna) , it's barely painting. See photo. I've updated the firmware, and have moved it inside and out, but not much comparitive improvement. I'm concerned that if I get this level of sensitivity here, I'll be struggling when airborne to see the whole picture.