I have 2 T460?s thatI purchased as a pair, they are setup the same and I have confirmed the screens match exactly. Both appear to work but will only communicate after 1 specific unit transmits. Let?s call them A & B if I transmit with A, B can?t hear me but once B transmits which is heard by A then A can transmit and B will hear it. If A then does not transmit for awhile same issue B can?t hear A until B transmits again first both are set with 15-13. I?m using these to back up an RV I?m concerned about the intermittence. I?v ehad These about 1 year and they have had their battery charged fully. Any help or ideas would be appreciated, Thanks