RE: Is there a radio that does not lose signal?
We had a 9C, Futaba synthesized module on channel 49, PPM
Plane 1. Big Stik 60, OS91FS, Hitec Supreme RX, Hitec 425 servos, 4.8v 1000mah nicad, all new when installed. 10-15 flights on everything.
Plane 2. SIG Hog Bipe, OS91FS, Hitec Supreme RX, Hitec 425 servos, 4.8v 1000mah nicad, all new when installed. At least 200 flights, over a couple of years, on everything.
Saturday 1. Fresh charge, load tested before flight. Stik in a spin. Release sticks, spin stops still diving. Try to pull up, no response. Plane destroyed. Everything is working after the crash. Load tested battery, no issue. Chalked it up to dumb thumbs.
Saturday 2. Fresh charge, load tested before flight. Bipe in a spin. Release sticks at vey high altitude due to nervousness from last Saturday, spin stops still diving. Try to pull up, no response. Try all controls, no response. Plane destroyed. Everything is working after the crash. Load tested battery, no issue.
Items common to both crashes
Transmitter
RF Module in transmitter
Channel 49
Pilot
Location of flying site
We are not changing pilots or locations so we went to the LHS and bought a new 9C which came with a fixed frequency module on channel 13. We also bought all of his channel 13 Hitec RX crystals. We have a couple of years on the new transmitter now with no issues.
We do not know for sure the old TX or module is bad but we no longer trusted it. We gave it away, with full disclosure of our experience. We do not know if the new owner ever used it; health issues have kept him away for a long time.