> NP Static is a pain in the butt to track down and worse to fly > with. The icom I fixed had corroded bnc connectors and a > crack in the solder on the shield side inside the box. It was > fuzzy and about once every 5-6 seconds would go crack. Took > an hour and a half pint of blood to figure it was on the radio end ;-] Why he asked me is because I fitted a controller for his variable pitch propellor. At times the controller would play up and send the propellor towards full coarse and would have to be reset. He then noticed that at the same time he was having this trouble with the radio too. When there've been controller problems in other planes, the majority are because of poor radio installations. Pulse counting circuitry and associated cable are generally OK if the radio has been set up properly and RF goes where it's supposed to -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist