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Old 03-16-2006 | 12:11 PM
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Ed
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From: Bemis, NM
Default RE: Questions on RF Interference

ORIGINAL: BHunn3



(1) If I do range checks and everything is ok, am I OK or is this RF issue intermitten?

Listen to what the Silver guy is telling you, he's right on target.

(2) I have been told a CF rod conducts electrical signals just like metal. Is this true or am I a little safer using a CF throttle pushrod than metal. I already have plastic servo arm and Hughs plastic clevis'.

The problem here is that any conductive push rod, including carbon, is behaving as an antenna, and that the collapsing magnetic fields from the ignition coil and associated wiring, is inducing a high voltage on the push rod. This high voltage spike is being carried back to the receiver and it's wiring. Not good, something that could bite you later on under extreme conditions.

(3) Even with a good range check, should I go to the trouble of relocating the ignition charge jack - removing, filling and repainting the old hole. The CDI unit/switch/battery are about 8 inches from the receiver and 5 inches from the receiver battery. Thank you.


In one of my planes my ignition charge jack & switch is about 4" from my receiver batteries (2), and I am not seeing a problem.

Your criteria should be - a carefull range check with the engine running, and the distance measured should be no less then 10% less then with the engine off. 50 paces, or 150 ft. is preferred. Tx antenna collapsed.

> Jim