Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
I record my transmitter numbers on a scuba equipment spreadsheet. The transmitters do get pretty beat up after many years of use.Are you sure the right code put in the receiver sometimes the number get hard to read.