Version R05.18 enforces FCC narrowbanding mandates. Unlike R05.16, which was the last version to allow 25 kHz (wideband) programming without a key, R05.18 requires a Wideband Entitlement Key to program frequencies with 5 kHz deviation. Final Release:
How to Program Motorola Two-Way Radios (CPS & MOTOTBRO Guide) cps r05.18