If it's one of the radios included in a RTR, that's why. Their cheapo radios stink as far as range goes. It's the radio. I have a DX3R and even with the cheap 2ch recievers, it has great range. I have 2 of the cheap radios that came with my SCB and Mini8 and they sit in my garage collecting dust. I'm a firm believer that a good radio is a MUST in this hobby. Pick up a decent Futaba like the 4PL or 3PMX and you'll be set.