I have the Uniden BCD436HP and attempting to monitor Philadelphia p25 from about 15 miles out. I have had some success in the past, with CC decode and broken up transmissions. Lately I haven't heard anything. I have a yagi 800 antenna pointed west towards Philly airport and am using firmware version 1.05.01. I am mainly looking for an optimal p25 threshold level in Manual mode (Or should I be in auto?) or any other tips to help with audio quality?