ORIGINAL: desertpig
I have 4 R700 FM receivers and two of the new 700 PCM recievers. They are absolutely bullet proof. I run them all un unregulated 6V packs and after hundreds of flights, they have all run flawless. I even have two of the FM units in Gasoline powered planes and have not had a single issue.
I have no doubt that it is not the receivers. I have moved the receivers to other planes afterwards and not seen anything untoward happen.
Are you using a JR Switch?
Yes. It's a brand new one. I haven't swapped that out, gut I would think that if I don't see the problem at home, it is unlikely to be that. I'll swap it out and give it a try.
It is possible your LHS has received 2 bad receivers (although unlikely) are you ABSOLUTELY CERTAIN the LHS gave you a new crystal. Sounds to me like your receiver is getting hits and it could be due to a oscillator freq shift.
The first receiver was brand new. The second receiver came from a plane that has been flying fine. I took it and it's crystal together and swapped them out lock, stock and barrel. IOW, when I swapped it, the crystal went with it.
You have done everything each of us would have done with the exception of changing channels and using a different brand or model receiver.
Changing channels is a problem because I'd need to change the channel of the receiver and I believe that is a bigger issue.
I forgot to ask - is the engine running ? I am assuming you have not ever gotten that far yet?
And I forgot to mention that I have broken the engine in on this plane's fuse. Whether the engine is running or not I see the flutter at the field. When I broke the engine in, I disconnected all except the throttle servo because of the flutter.
Thanks for your reply. You guys have all given me stuff to think about and at least validated that I am thinking about the right things.