Federal Communications Commission (FCC) has granted 373 radio service licenses and call signs in Portland, Maine. 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 | 115 |
| Ship Recreational or Voluntarily Equipped licenses | 68 |
| Ship Compulsory Equipped licenses | 51 |
| Restricted Operator licenses | 50 |
| General Mobile Radio (GMRS) licenses | 38 |
| Vanity licenses | 32 |
| Aircraft licenses | 19 |
