Usually, what I've read, is about 1000 yards maximum for the park flyer radio receivers. I would consider that a bit of an over statment and would not trust them further than several hundred feet, certainly not more than about 600 feet, which is 200 yards.

The full range receivers are not that much more expensive, say for the DX6i or DX7 so why bother with a reduced range and the possibility of ruining someone's day.

For 72 MHz receivers, Berg makes a full range micro receiver. Very nice 7 channel units.

CGr.