SOURCE: how to reset mmsi number Raymarine 215
This secret code is for the Raytheon / Raymarine RAY 220 VHF. It may work on other Raytheon/Raymarine radios also.
Here you go:
With the Power OFF, Press and HOLD the FUNC, 16/9 and DSC keys while you power ON. Do not release the keys until you hear the audio BEEP which means your done. Then reprogam your NMSI number as per the manual. Pretty easy, hey?
SOURCE: I am trying to find a replacement battery for a standard horizon handheld VHF model # HX350s
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