The Federal Communications Commission (FCC) has granted a total of 38 licenses and call signs in the category of Restricted Operator license in Ellicott City, 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 |
|---|---|---|
| RR00005619 | Zuckerwar, Gerald | 2002-04-18 |
| RR00007262 | Kealey, Nathan F | 2002-07-20 |
| RR00008314 | Sites, Charles W | 2002-09-19 |
| RR00010966 | Sites, Robert J | 2003-02-28 |
| RR00030220 | Andrews, Gordon B | 2005-07-20 |
| RR00031079 | Kirk, Patrick W | 2005-08-25 |
| RR00033032 | Halt, John R | 2005-11-29 |
| RR00033469 | GOODALL, KEITH S | 2005-12-16 |
| RR00034713 | CRERIE, JONATHAN A | 2006-02-10 |
| RR00037035 | Shea, James E | 2006-05-06 |
| RR00053677 | Henry, Thomas J | 2007-10-31 |
| RR00056394 | Meissner, Matthew P | 2008-02-05 |
| RR00059443 | DAVIS, LARRY T | 2008-05-23 |
| RR00066130 | Bredehoft, Robert E | 2009-06-30 |
| RR00066865 | Adkins, Winfield A | 2009-08-19 |
| RR00091170 | hauswirth, matthew a | 2012-12-11 |
| RR00096058 | Strobel, Samuel | 2013-07-25 |
| RR00101205 | Smith, Steven M | 2014-03-13 |
| RR00106186 | Wisneski, Ronald J | 2014-09-12 |
| RR00109011 | Routt III, Howard R | 2015-01-21 |
| RR00110607 | Qureshi, Khurram I | 2015-03-20 |
| RR00113958 | Sterling, Michael M | 2015-08-05 |
| RR00115722 | Ratnofsky, Nathan D | 1998-01-21 |
| RR00118891 | ENDSLEY, JONAH L | 2016-02-17 |
| RR00124511 | Chow, Matthew | 2016-09-01 |
| RR00137329 | Elliott, Ellen J | 2017-11-03 |
| RR00142347 | Sandusky, Michael | 2018-04-04 |
| RR00143037 | Kimack Jr, Michael | 2018-04-24 |
| RR00143955 | Watts, Mark A | 2018-05-17 |
| RR00159031 | Parker, Derek W | 2019-07-27 |
| RR00159206 | Vane, Matthew C | 2019-08-02 |
| RR00160403 | Blackmore, Hunter K | 2019-09-04 |
| RR00161624 | Montgomery, Benjamin B | 2019-10-08 |
| RR00163835 | Guardia, Ismael I | 2019-12-10 |
| RR00169208 | McTamany, Sean P | 2020-07-16 |
| RR00176384 | Knudson, James G | 2021-06-09 |
| RR00178692 | Comeau, Christopher D | 2021-08-10 |
| RR00190984 | Zhuang, Yongbao | 2022-05-28 |
