The Federal Communications Commission (FCC) has granted a total of 11 licenses and call signs in the category of Restricted Operator license in Altadena, California. Select a call sign from the table below to view its details such as the date of authorization, expiration date, service description, and so forth.
| Call Sign | License Holder Name | Date of Authorization |
|---|---|---|
| RR00012428 | MATHER, ALAN D | 1996-03-19 |
| RR00068980 | Grenander, Sven U | 2010-01-14 |
| RR00068981 | Grenander, Nancy J | 2010-01-14 |
| RR00093457 | Thompson, Gregg M | 2013-03-19 |
| RR00097233 | Cohen, Vidal | 2013-09-17 |
| RR00097794 | McLennan, Donald A | 2013-10-23 |
| RR00146639 | van Riet, Johannes H | 2018-08-07 |
| RR00152671 | DONOYAN, GEORGE | 2019-02-14 |
| RR00158540 | GUTIERREZ, GREGORY L | 2019-07-12 |
| RR00176116 | Decrossas, Shannen | 2021-06-02 |
| RR00204004 | Borts, Gerald | 2023-02-24 |
