The Federal Communications Commission (FCC) has granted a total of 321 licenses and call signs in the category of Amateur license in Columbia, 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 |
|---|---|---|
| KC3SMM | Martin, Graham | 2021-07-27 |
| KC3SSA | CHAN, ANDREW D | 2021-09-14 |
| KC3TDB | Smith, Dexter G | 2021-11-22 |
| KC3TJK | Yi, Daniel | 2022-01-18 |
| KC3TNK | Iversen, Saul H | 2022-02-22 |
| KC3TTC | Booms, Jason A | 2022-03-21 |
| KC3TVL | Miller, Glenn E | 2022-04-04 |
| KC3UGY | Nurse, Christine | 2022-05-25 |
| KC3ULI | Borowy, Mark S | 2022-06-23 |
| KC3ULR | SOLOMON, JORDAN S | 2022-06-25 |
| KC3UQS | Rieger, Kurt | 2022-08-16 |
| KC3URT | Katzen, Mark A | 2022-08-23 |
| | ||
| KC3UWM | Cruz, Kelsey S | 2022-10-01 |
| KC3UWN | Moore, Natalie C | 2022-10-01 |
| KC3VC | MC BIRNEY, DELORES A | 2015-01-05 |
| KC3VGQ | Bruce Jr, Joseph A | 2022-12-06 |
| KC3VHY | Burzynski, Mike D | 2022-12-20 |
| KC3VKD | Gossett, Brian | 2023-01-10 |
| KC3VKN | Fern, Sean | 2023-01-13 |
| KC3VQL | Rogers, Nathaniel | 2023-03-01 |
| KC3VUE | Yerkes, William J | 2023-03-22 |
| KC5IZT | Mauldin, Kendall D | 2014-10-15 |
| KD3OU | CURRIE, PETER D | 2021-07-29 |
| KD3VZ | SCHAPIRO, PAUL L | 2020-12-02 |
| KD3WN | CHNUPA, TYLER | 2022-05-24 |
| KD5BDC | BLAIR, MARK W | 2017-05-31 |
| KD5BWT | Jensen, Peter C | 2017-04-26 |
| KD5NXU | Tolbert, Mathew A | 2021-02-10 |
| KD7FBJ | O NEILL, MARK T | 2020-02-12 |
| KD7GFY | EISENHAUER, WILLIAM E | 2019-05-24 |
| KD7ISG | Eisenhauer, Karen W | 2020-02-12 |
| KD7YBZ | SHIKASHIO, DOUG | 2013-07-20 |
| KD8BGX | Schnelle, Stephen R | 2015-03-17 |
| KD8SXE | BOUVY, ALEX A | 2022-08-30 |
| KE3KE | SCHOEN, LAWRENCE J | 2013-07-19 |
| KE3N | Blake, James W | 2014-09-03 |
| KE3VR | BARRY, JONATHAN D | 2015-05-05 |
| KE6YOU | MC CARTY, PATRICK W | 2015-09-22 |
| KE7CJJ | SHIKASHIO, DELAYNA R | 2014-11-04 |
| KE7GUL | Nicholson, Jeffrey M | 2015-12-18 |
| KE7HKG | Hansen, Jared D | 2016-02-09 |
| KE7HKP | Machaby, Erik J | 2016-10-25 |
| KF3EF | SMITH, MICHAEL S | 2016-06-15 |
| KG4HPJ | Wenholz, Carrie A | 2009-08-06 |
| KG8ZY | BOWE, RALPH | 2016-10-12 |
| KI4BZJ | YARBROUGH JR, CHARLES G | 2013-08-08 |
| KI4GHM | Tanner, Matthew A | 2014-06-10 |
| KJ4BZK | Moore Jr, Gregory L | 2018-02-16 |
| KJ4FMD | Ayodele, Jimi O | 2018-06-06 |
| KL2XF | Bush, James A | 2020-03-07 |
| KM4EID | Browneagle, Nathan S | 2014-09-18 |
| KM4GSL | CHANG, JAMES W | 2014-12-23 |
| KW4CH | Szabo, Marian | 2014-10-20 |
| N1RBW | Herr, Chris H | 2003-10-15 |
| N1RWJ | GOLRICK, GREGORY M | 2004-08-24 |
| N3DGB | FOSTER, BARRETT J | 2015-09-24 |
| N3DJI | SHEKORE, FRANKLIN J | 2017-08-19 |
| N3EHD | FENER, ALAN R | 2015-10-27 |
| N3FVC | BEYER JR, GREGORY L | 2019-07-30 |
| N3GFD | GROGAN, EDWARD T | 2018-03-13 |
| N3GFO | BROOKER GROGAN, ANNETTE L | 2019-02-05 |
| N3GON | MC KAY, SCOTT C | 2013-05-07 |
| N3HQU | STENGEL, JASEN A | 2019-11-23 |
| N3KBI | MATHESON III, RODERICK | 2012-09-18 |
| N3KHF | HESTNES, DAG | 2011-06-06 |
| N3KNN | Hendershot, James L | 2021-12-30 |
| N3LDW | Hestnes, PHYLLIS H | 2011-12-03 |
| N3LFH | WALLACE, MICHAEL E | 2016-04-14 |
| N3LFI | KOZA, JEREMIAS S | 2011-10-05 |
| N3LPT | BOYLE, JAMES W | 2022-02-09 |
| N3MCI | SCHLEPPEGRELL JR, JOHN R | 2012-02-23 |
| N3NCL | HULL, SCOTT M | 2012-07-24 |
| N3NWE | REGGIA, JAMES A | 2012-11-14 |
| N3ORR | GOSNELL, COREY E | 2005-01-18 |
| N3PTF | BARRY, CHRISTOPHER G | 2013-08-13 |
| N3PTJ | MC CRAY, THOMAS G | 2013-05-11 |
| N3QDU | GIERSCH JR, GORDON R | 2013-08-06 |
| N3RER | WOOD II, KENNETH C | 2013-10-18 |
| N3RYC | WILLIAMS, ROY L | 2004-04-21 |
| N3SPL | BOARD, KENNETH R | 2014-07-15 |
| N3TIC | PITTINGER, SUSAN M | 2014-07-18 |
| N3TOF | HABIGER, KARL E | 2006-02-01 |
| N3XPR | HERZEL, MEREDITH J | 2016-06-14 |
| N3XPS | HERZEL, MATTHEW D | 2006-04-07 |
| N3XWK | ALBERT, DAVID A | 2016-05-26 |
| N3XXP | MCGARITY, MICAJAH Z | 2016-08-02 |
| N3YLT | ROBESON, DAVID O | 2017-08-25 |
| N3ZDF | PILOTTE, KRISTIN J | 2007-03-17 |
| N3ZPL | PILOTTE, JAMES O | 2007-05-18 |
| N3ZWN | PANG, MICHAEL I | 2017-06-29 |
| N4EVC | SMYTH, GEORGE L | 2006-04-05 |
| N4FXL | HIGGINS, JAMES T | 2015-01-22 |
| N5III | CAPPELLO, STEPHEN A | 2015-06-03 |
| N7HPM | BOWE, JOAN C | 2016-02-17 |
| N8COW | PERUZZI, SHERRY D | 2017-04-18 |
| N8SOP | IAFRATE, MICHAEL L | 2012-03-08 |
| N9AQC | ZEWARI, SAID W | 2016-06-24 |
| N9GNK | JOHNSON, PAUL W | 2018-05-30 |
| N9ZXX | DEAN, ERIC J | 2017-01-18 |
| NG3O | CORLEY, WILLIAM F | 2017-08-21 |
