Ok I'll check the above suggestions I have another rx and will switch it out. Here's a little more info The tx is 8103 the rx is NER-549x when I first put the plane together I had some jitter just turning on tx and plane. a few club members helped and we ended up replacing switch, it seemed to have fixed the problem. I was out by myself today when this started. My tx does have a new battery 2500 mah charged over night had 11.4 this morning and around 11volts when this occured. Charged with wal-wart. She will be grounded like Mr. Ken said until we figure it out. I give RCU the credit for doing my range check while engine running, read ,read and read some more and if all else fails just ask. Trying to get away from HH stuff and may make the leap into 2.4 if Miss Clause will let me, give futaba a try but would like to solve this with equipment I have. Thanks for the quick responces