RE: Futaba 9c: lost radio link to 148DP receiver
I had a simular problem with my 9CH. Two of the 4 prongs that go into the transmitter crystal pack were pushed together and going into the same hole in the pack. Anyhow I noticed that the green light on the front of the transmitter doesn't come on if it isn't sending out a signal. Only the red power light will come on. You can use this to isolate if the problem is in the transmitter or reciever. Using the Hitec synth module caused some problems because of having to take it of and on so much to switch frequencies. I use the Futaba synth Module now, I can change frequencies without removing it which is much better.