Batboard

Please bear with me as I don't know anything about radios but I couldn't find anything by searching. I have two Motorola "R-Net" modems of part number K44GNT1001, and I can't find any information about them. They had crystals installed in them so that they one would have Rx/Tx of 405 MHz and the other at 404MHz. They are not working properly, and my best guess is that the frequency is slightly off and needs to be tuned. Does anyone have any leads as to how this needs to be done?

Not a well supported product any more. You should contact a local radio shop to see if they can help you. It was discussed a couple years ago in this thread.