I dunno about 2 blocks. I have 2 GMRS rigs, one is a 'blister-pack' Midland MXT90, and the other is the Anytone 778 dualbander (only use it for GMRS, and monitoring 2m and 70cm), and with either of these radios I can hear a GMRS repeater out on Long Island from Rhode Island, which has to be 25-30 miles, as the crow flies. Over water? Yup, sure is, but I can also monitor a 2m repeater from the same locale in R.I. up in Vernon Ct., and some nights I get at least 9s on that signal. I've got a high-gain mobile antenna with a GPK about 18 feet in the air on a repurposed flagpole...don't rightly know if that's why I can hear these distant stations, or my location (75ft A.S.L.), but have talked simplex to another GMRS mobile setup about 14 miles away in Ct., and get anywhere from 2 to 4s on that station, if he's parked.
WRAQ431 S.W. Rhode Island