Federal Communications Commission (FCC) has granted 73 radio service licenses and call signs in Twain Harte, California. 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 | 41 |
| General Mobile Radio (GMRS) licenses | 17 |
| Vanity licenses | 10 |
| Restricted Operator licenses | 3 |
| Aircraft licenses | 2 |
