Patent ID: 7103392

Claim:
A wireless intercom system comprising: a wireless intercom unit comprising: (a) an electronics housing including a first side, wherein the first side is configured to interface with a planar surface; (b) a microphone configured to receive an audio signal input, said microphone located on a portion of the housing other than the first side; (c) a speaker configured to broadcast an audio signal output, said speaker located on a portion of the housing other than the first side; (d) a first intercom transceiver for a first radio frequency range operably connected to the microphone and the speaker; and (e) an input device located on a portion of the housing other than the first side; (f) a second intercom transceiver for a second radio frequency range; (g) a third intercom transceiver for an additional radio frequency range, wherein the input device is a channel control input device configured to select the first or third intercom transceiver; and a base station that communicates with the wireless intercom unit via radio waves; a speaker post that communicates with the base station via radio waves; an earpiece configured to be worn on a ear of a user, the earpiece comprising an earpiece speaker, an earpiece microphone; and an earpiece transceiver for transmitting and receiving radio waves in a second radio frequency range.