Need to find out the part # of the receiver. Can you take a picture of the receiver and post it on here? If it is a park flyer receiver the range on that receiver is not very far. I think that this might be the culprit.

Another thing to check. How do you charge your batteries? Do you use the wall charger or are you using a peak charger?

I am also curious as to what the capacity is of your batteries. (In the transmitter and receiver).

Post pictures if you can. This will help all of us to be able to help you better.

Regards

Glenn Williams