The Federal Communications Commission (FCC) has granted a total of 14 licenses and call signs in the category of Restricted Operator license in Gambrills, Maryland. 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 |
|---|---|---|
| RR00068577 | Arnold, Patrick W | 2009-12-22 |
| RR00075651 | Holmen, David P | 2011-01-14 |
| RR00077296 | Hinz, Kevin M | 2011-03-22 |
| RR00097387 | McCarron, Eugene J | 2013-09-24 |
| RR00125250 | Rick 913, Benjamin P | 2016-09-28 |
| RR00133766 | Gates, Aaron M | 2017-07-12 |
| RR00140467 | Beatty IV, Earl | 2018-02-08 |
| RR00142350 | Cliver, Jarad S | 2018-04-04 |
| RR00149262 | Leicy, Jeri-Lynn H | 2018-10-22 |
| RR00157579 | Hagood, Isaiah N | 2019-06-14 |
| RR00169087 | Fay, William M | 2020-07-08 |
| RR00175975 | Pearsall, William P | 2021-05-28 |
| RR00191602 | Marquess, Alexis S | 2022-06-11 |
| RR00193731 | Ford Jr, James D | 2022-07-26 |
