RE: Is there a radio that does not lose signal?
Hey, Ihave been flying Hitec Aurora 9 for 2.5 years with never glitch! Electrics to .70 size 4-stroke glow. Before that Hitec Eclipse 7 on 72MHZ for 10 years with no radio problems.
I believe most lost of control things are poor aircraft prep, batteries too small and or old/improperly charged batteries. Also,many people don't seem to realize there is a limit to how many servos a basic ESC/BEC circuit can handle. Also Irecommend 6volt batteries for all glow model RX systems. For electrics with more than 4 servos, use a seperate CCBEC set for 6vdc to power your RX and servos. Also the A9 will beep and let you know if your battery is dropping low during hard high current draw manuvers.
Good luck!
Jim D.