I'll agree with the above statement whole-heartedly. I was down in MD for two days working with a co-worker. I stayed in a hotel near BWI, and managed to get the girl to give me the 4th. floor (I'm thinking multiple-county system reception at that point
).
When I got settled into my room, I was quickly dismayed to see a large amount of intermod close to the hotel, basically wiping out reception on 800 MHz. It wouldn't lock on to any of the P25 systems in the area south of Baltimore, and when I was able to get it to receive anything on BaltCo or Anne Arundel's systems, what I heard over the speaker sounded like the pulsing tick of a GSM cell phone signal (only 10x stronger).
There was some conventional P25 on 453 MHz that I heard, and I am proud to admit that even with all that RFI, I did not hear a single situation of motorboating...
