A loudspeaker audio accessory provides and non-cable interface to a portable radio. The accessory can operate in conjunction with the radio or as a standalone device. An accessory loudspeaker is contained within the accessory housing, the accessory loudspeaker being positioned at a tilted angle within the housing to direct audio upwards towards audio porting located on a top surface of the accessory housing. The accessory provides a plurality of operational modes, the first mode of operation being a stand-alone mode generating an emergency alert audio tone via the loudspeaker in response to a switch being enabled; and the second mode of operation provides boosted audio via the accessory loudspeaker when the accessory is coupled to a radio. The accessory can also operate in conjunction with the radio via a short range link to selectively emergency signals and boosted audio.