Hailer, Fog horn, and Intercom ContentsHailer Fog Intercom menuThe menu options available are determined by the accessories connected to your radio.Loud hailerThe Ray70, Ray73, Ray90 and Ray91 VHF Radios can be connected to a Loud hailer.Fog hornThe fog horn function requires an optional loud hailer to be connected. Please check your product description to ensure a loud hailer can be connected.IntercomThe Intercom function is available when more than 1 station is connected to your radio.Previous topic: VHF operationsNext topic: Maintenance