would like some suggestions if possible on what this might be. My BC780 seems to be deaf on all trunked freqs. I have 4 Trunked systems on my 780. All it does is scream thru the feqs and never locks onto a control channel. All the conventional stuff works fine. I have had it hooked up to 2 diff. antennas to test this. One being a radio shack mag mount inside my place here the other being a ground plane outside on my deck. With the conventional freqs I'm pulling stuff well over 60+ miles away easily.The trunking freqs are right within a few miles from my location. My Pro-97's have no issue scanning them at all, using a RS 800mhz duckie. I have programmed and re-programmed the freqs. I can't figure this out for the life of me. All the obvious stuff i have checked on the scanner, so i ask for help from you out ther now please. Could it be something in the trunking capabilities is broken? God I hope not. Just seems odd that 4 different trunked systems will not come in at all.