He read the repeater’s existing codeplug. It was corrupt in the tuning section—wideband deviation set to 5 kHz, while the portables were looking for 2.5 kHz. The squelch table was inverted. The PL tone (private line) was shifted by 1.2 Hz, enough to make the repeater’s receiver think every transmission was just noise.

Andy nodded. That wasn’t a hardware failure. That was a personality issue. Some idiot with a programming cable had uploaded the wrong codeplug. The repeater thought it was talking to other repeaters, not handhelds.

This guide is for educational and informational purposes only. Programming transmitters requires a valid FCC license (or equivalent local authorization). Additionally, Motorola Solutions software is copyrighted and licensed to specific users. Use of this software without a proper license agreement may violate copyright laws.