Correction
I am a volunteer firefighter in Charles County. We established the "Marshall" channels because certain areas of "Marshall" are under sea level. The XTS radios do not get signal there @ all. When you key up on a "Marshall" channel your radio communication goes to VA which relays for Charles County. I hope this sums up some of this. And for some of you it "Marshall" not "Marshall hall"
Respectfully,
Terrance