I got out the old calculator, tape measure, & radio frequency wavelength chart and took the time to size the whips for the frequency's I was going to be monitoring instead of just using a ballpark setup that kinda worked. I wanted to monitor the mid 150's & 868-867Mhz. I used to use a singal whip that was cut for UHF (11.5 inches). It picked up the 800 band fine but the 150's struggled. I recently got another trunk lip mount & mounted in a UHF cut at 6.75 inches to catch half the wavelength & it works like a dream. I also went out and got a Larsen antenna that I cut at 38 inches to get 155's. I then used a bnc connector from each short cord (2 feet maybe each (cut them)) that feed into a T-junction that went through only 10 feet of cord to get to the radio. It works like a dream. I get everything from all over now & according to the 396T's signal strength meter on trunk systems it dominates the old setup. I guess the moral of the story is I actually took the time to do the research & got wonderful results!