External Radio Mode

(Glossary)

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External Radio mode amplifies and broadcasts incoming radio messages over the optional Siren / Public Address speaker. This allows received radio communications to be heard outside the vehicle.

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The External Radio feature is not available with a Siren Switchbox (e.g. HLN6819B).

 

WFForward.png External Radio mode is radio-user enabled:

  • with an DotRed.png External Radio button-press in conjunction with DotRed.png Siren button-press (which enables the external Siren / PA speaker), or

  • directly with a DotRed.png Direct Ext Radio button-press (which simultaneously enables the external Siren / PA speaker).

 

If the Siren is sounding when DotRed.png External Radio or DotRed.png Direct Ext Radio is pressed, the Siren sound is abruptly muted and External Radio mode is initiated.