Greetings, I have a GP Patty with a DA-50, 6XAS FM with HiTec's and it will not ground check for me. Are you aware of a generic checklist for solving interference problems?

Thanks
John

What receiver are you using? Your post doesn't say.

Sorrry,

It is a Futaba R127DF Reciver

Thanks

OK..first, is the problem with engine running or engine off? If when running, then you may have an electrical noise problem from te engine.

Check the battery pack. Is it able to deliver the current to power all the servos. Are all the servos good? How does it work if you use Futaba servos...sometimes, mixing brands of equipment can cause problems. Do you have good-quality servo leads and connectors? How long are the leads...do you have heavier-gauge wire on the longer leads. Do your long leads have RF chokes or ferrite beads? How close is the battery and servo wiring to the receiver and receiver antenna?

If you remove the equipment from the model and have the receiver antenna to one side and all the servos to the other, do you still get glitching?

There really isn't an official "checklist", you just need to start out with one thing and carefully work your way through. Unplug all the servos and see if you get glitching with one servo. Add the additional servos one-by-one and see when you get the interference. Maybe one servo is causing the problem. It may be that the Hitec servos you're using just aren't compatible with your receiver.

Bax,

The problem occurs with the engine running or not.

We did add the heaver gauge extensions. The plane is setup per the manual and I believe the leads back to the elevator and rudder are probably 24" plus the length of the servo wires...so pretty long.

I'll check the promiximity wires to the Nimh 2400mah battery.

Regarding "RF chokes or ferrite beads", where can I get these?

Thanks again,
John