I seem to remember an article in one of the mags that talked about two people on the same 27mhz band frequency. The article went on to say that you could reverse the transmitter and receiver crystal in one of the radios and then both racers could use the same channel. I have not tried this yet but as soon as I can scratch up two radios on the same 27mhz channel I want to see if it works. I am wondering if anyone has tried this and knows if it works without interference? Thanks.