Dennis-As long as the transmitter was narrow banded it should be okay. Be sure to replace ALL your battery packs, and do a real good range test. At the field, turn on transmitter and receiver and with the transmitter antenna collapsed, start walking away while moving the sticks. You want to get at least 75 to 100 feet away from the plane and still have good control of the surfaces, without any "jittering". It helps to have someone else there to watch the plane.

You should then start the engien and do the same test at idle, and again at high throttle. If all these range checks are okay, then I don't think you need to send the equipment in.

I would be careful if someone is on an adjacent channel though. ie. if you're on channel 34 and someone shows up on channel 33 or 35, have them turn on their transmitter and receiver and you turn your's on. There's a chance that your transmitter is slightly off frequency and may affect his equipment. There is also a chance that your receiver will react to an adjacent channel.

Just my opinion of course.

Good luck and have fun!
Dennis-