The Federal Communications Commission (FCC) has granted a total of 14 licenses and call signs in the category of Restricted Operator license in Piedmont, 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 |
|---|---|---|
| RR00039377 | Anthenien, Chris P | 2006-08-17 |
| RR00050626 | Rose, Jordan P | 2007-07-31 |
| RR00059998 | Olsen, Lawrence S | 2008-06-20 |
| RR00110959 | Riddiough, James R | 2015-04-03 |
| RR00134737 | slabaugh, peter a | 2017-08-11 |
| RR00141035 | Lymburn, Bruce S | 2018-02-27 |
| RR00148689 | Rosenbaum, Jacob B | 2018-10-05 |
| RR00155362 | Muhiudeen, Kamil J | 2019-04-17 |
| RR00156533 | Aldridge, Michael D | 2019-05-17 |
| RR00169210 | Muhiudeen, Iain K | 2020-07-16 |
| RR00187976 | Boltwood, Evan P | 2022-03-25 |
| RR00199126 | Jahn, Paul E | 2022-11-15 |
| RR00205126 | Meagher, Dai B | 2023-03-17 |
| RR00206895 | London, Spencer S | 2023-04-22 |
