Thank you for the input thus far. Its very helpful.
The brownout concept may be accurate. The car would be fine and then occassionally the signal would cut out temporarily. Then after a few seconds (usually after the car hit something
the signal would come back.
It may be helpful also to say that this was in a one cell WGT pan car. So perhaps that plays into the low voltage thing?
I did change transmitter batteries. They went from reading 5.3 volts to 6 volts and it was the same, if not worse.