Fire Department

Bi-Directional Amplifier Permit


cambridge bi directional antenna box

The Cambridge Fire Department requires a Bi-Directional Radio Amplifier for public safety radio frequencies in all high-rise and below grade structures. Some low-rise structures, depending on type of construction, may need one also.

Please contact the Fire Department Technical Services Division at (617) 349-4920 for technical specifications and system requirements.

Click the following link to apply for a permit to install a bi-directional amplifier system:


Visiting City Hall

Cambridge City Hall

795 Massachusetts Ave
Cambridge MA, 02139
Ph: 617-349-4000
TTY: 617-349-4242

Hours of Service

Monday: 8:30am-8pm
Tuesday-Thursday: 8:30am-5pm
Friday: 8:30am-12pm

Louis DePasquale
City Manager

Lisa C. Peterson
Deputy City Manager