The Federal Communications Commission (FCC) has granted a total of 18 licenses and call signs in the category of Restricted Operator license in Sonora, 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 |
|---|---|---|
| RR00004171 | Schoennauer, Stephen P | 2002-01-17 |
| RR00029909 | Nelson, Daniel E | 2005-07-12 |
| RR00040500 | Kelley, Victor I | 2006-09-19 |
| RR00040861 | Hall, Ryan P | 2006-09-28 |
| RR00062718 | Kruetzfeldt, Daniel A | 2008-11-15 |
| RR00066721 | JACOBSON, ROGER | 2009-08-07 |
| RR00070547 | Miller, Roy A | 2010-04-07 |
| RR00081556 | Stenger, Matthew J | 2011-09-13 |
| RR00087522 | Mullins, Christian L | 2012-06-19 |
| RR00098791 | Duckett, Edwin B | 2013-12-03 |
| RR00099442 | McNally, Rodney A | 2014-01-07 |
| RR00107949 | Segerstrom Jr, William C | 2014-12-02 |
| RR00108814 | Brunelle, Nathanael P | 2015-01-14 |
| RR00133050 | Hiemstra, Andrew R | 2017-06-20 |
| RR00133315 | Hiemstra, Thomas r | 2017-06-27 |
| RR00163611 | Fisher, Darryl J | 2019-12-03 |
| RR00173372 | Spillner Jr, Charles J | 2021-03-16 |
| RR00180242 | Huntley, Michael E | 2021-09-16 |
