Federal Communications Commission (FCC) has granted 230 radio service licenses and call signs in Chelmsford, Massachusetts. Select a service category from the following table to research licenses and call signs in that category.
| Radio Service Category | Number of Licenses |
|---|---|
| Amateur licenses | 154 |
| Vanity licenses | 32 |
| General Mobile Radio (GMRS) licenses | 24 |
| Restricted Operator licenses | 10 |
| Ship Recreational or Voluntarily Equipped licenses | 6 |
| Aircraft licenses | 4 |
