Making a Motorcycle Intercom

Written by jim hagerty
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Making a Motorcycle Intercom

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A motorcycle intercom system can be a helpful communication tool. It allows the passenger and operator to comfortably talk without getting distracted by road noise. A intercom system is a fairly simple mechanism similar to that of two-way radios. Some units are fashioned using cellphone setups while other are made especially for bike riders.


A transmitter operates each unit of the motorcycle intercom system. The transmitter is built to operate similar to a CB or two-way transmitter that allows users to speak to one another on the same channel (frequency). The transmitter is usually mounted on the bike itself or held by a rider. Some intercom units use an FM or AM radio as their transmitters. The radio is set to a specific channel. Each wireless head set is dialled in accordingly.

Headset and Microphone

An intercom headset is equipped with at least one ear piece and a microphone. The user presses a button to alert and speak to the other party through a microphone and listen through the ear piece or head phones. Headsets either connect to a transmitter with a wire or use radio or cellular technology. Some helmets are equipped with ear pieces and microphones powered by the system's transmitter.

Acoustic Systems

Some motorcycle intercoms do not require electronics. These systems function using ear plugs and mouthpieces. Mouthpieces and ear units are connected to rubber tubes that connect at the bottom to a small wooden or plastic box, commonly called a junction or resonator. When one person speaks into his mouthpiece, sound travels through the tube to the box where it resonates, allowing the other party to hear what's being said. The box can be placed in a rider's pocket or mounted somewhere on the bike. When one rider wishes to speak to the other, he gives a signalling tap or simply starts speaking.

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