I went to a fun fly here a while back and a hobbyshop insisted they used GWS 8 ch receivers with no problem on gassers. (PPM FM) Well I bought one and it was worse than what I was using. The ground check on it MAX was 150ft with engine off and antenna down. I put it in my lazy bee becouse I dont fly it more than 100ft or even less. I havent heard of multiplex ipd but I have ran out of funds anyway for a while to sink into it. Horizon even put a braided cable over my plugwire which didnt help.