It's strange because even with the rooftop antenna I get CG-114 and CG-121 on regular basis but not CG-117. Are they encrypted?
I was in OC recently and got a couple brief comms from a CG boat reporting position entering and exiting Absecon Inlet on 117. But that was it. The station may be running enc. I honestly wasn't in the hotel room that much. The radio was continuously on and scanning CG channels with only a few hits over three days.