A building to building intercom system poses several challenges. For a wired system there’s the obstacles between the buildings. Usually there is a paved parking lot or city street between buildings. If you’ve ever gotten a quote to have someone come and trench across a parking lot to run a cable, and then repair that parking lot afterwards, you know that the expense can be astronomical.
If you have a public street between buildings, now you not only have the huge expense, but also the red tape of trying to get the city to let you dig their street up. It’s not always possible, especially in historic areas.
So that’s why wireless intercoms are popular for building to building intercom applications. But these are not without challenges either. For wireless intercoms distance and interference are the potential application killers.
There is really only one wireless intercom system that fits this application. This “system” is really more of a wireless spectrum that multiple manufacturers use. That spectrum is call MURS, which is short for Multi-Use Radio Service. It is a group of unlicensed frequencies and any manufacturer can create compatible products for it.
MURS has a long range and it has enough power to overcome lots of interference so it’s perfect to use as a building to building intercom system.
You can find these intercoms on www.intercomsonline.com under the MURS Radios link.