As long as you are using a wired motorcycle communication system for communicating between biker and passenger, you don’t have to worry about any external disturbances. For the case that you want to use the system for bike to bike communication, some wired bike communication systems allow adding an optional FRS/GMRS radio, which works like the walkie talkie you might know from your childhood. Using public frequencies, with such FRS/GMRS radios you have to expect some external interference, depending on the area you are using it.

Some people complain that the wiring can occasionally be a bit of an annoyance as the units need to be plugged and unplugged every time the rider and passenger get on and off the motorcycle. However, depending on the setup of your wired motorcycle intercom, we are talking about two or three plugs.

In general you can compare these systems with the ones used in old ships, where a captain used to give instructions from the bridge to the engine room.

One of the few advantages of such an acoustic bike intercom is that it does not need any electronics or batteries. On the other hand they don’t offer any way of adjusting the volume or filtering out ambient noise. This makes motorcycle communication difficult at higher speeds. Also these so called “ear plugs” might be uncomfortable when using them for a longer time.

Additionally you need to consider that an acoustic motorcyle intercom is solely designed for communication between biker and passenger and not from bike to bike.