The Federal Communications Commission (FCC) has granted a total of 312 licenses and call signs in the category of Amateur license in Frederick, 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 |
|---|---|---|
| AA3SR | MIHALOV, JEREMY J | 2022-04-05 |
| AB3HZ | Lide, Roger M | 2018-06-02 |
| AB3KB | Morrar, Sam | 2009-10-30 |
| AB3KS | Whitmore, Mark E | 2020-01-28 |
| AB3NL | Ashby, Bernard E | 2011-02-14 |
| AB3NN | WEISS, DAVID M | 2016-11-16 |
| AB3RW | ROZELLE, BRIAN E | 2023-03-03 |
| AB3YX | Insinna, Ezio M | 2016-04-01 |
| AC3EW | WALKER, MARK C | 2019-07-19 |
| AE3M | THOMAS, JOHN S | 2015-04-01 |
| AE3T | Sherer, Howard M | 2016-11-15 |
| AF4PZ | WALKER, MARK C | 2019-07-19 |
| | ||
| K1GSR | DOMMERICH III, ALEXANDER L | 2021-07-02 |
| K3ERM | FREDERICK AMATEUR RADIO CLUB | 2017-04-17 |
| KA2KPI | DMUCHOWSKI, MICHAEL P | 2016-01-05 |
| KA3CEA | APPS, GRANT L | 2016-08-10 |
| KA3IKI | Creekmore, Jane L | 2019-06-20 |
| KA3LVY | Higgins, Sue | 2004-08-27 |
| KA3LVZ | YONETZ JR, GERALD C | 2008-11-12 |
| KA3MKV | DEVILBISS, ELIZABETH G | 2020-05-26 |
| KA3NLF | THOMAS JR, CARL C | 2017-04-04 |
| KA3OXH | HARLEY SR, JOHN R | 2017-10-24 |
| KA3PCA | HARLEY JR, JOHN R | 2016-04-11 |
| KA3PVM | HUEBER, JOHN E | 2018-02-01 |
| KA3PVS | GIGANTE, VICKILYN M | 2018-10-23 |
| KA3PXF | WHALEN, FREDERICK J | 2015-12-17 |
| KA3RKJ | DEGRANGE, MICHAEL L | 2016-12-15 |
| KA3SLE | BURTNER, MICHAEL L | 1990-06-12 |
| KA3USB | BEALL, JOHN W | 2019-10-23 |
| KA3VLH | Filkins, David M | 2013-02-20 |
| KA3VRG | GAGE, ROBERT F | 2020-02-11 |
| KA3YEL | Filkins, Denise A | 2013-01-31 |
| KA4OWF | GORDEN, ARDINE O | 2006-12-14 |
| KA8NGZ | WILLIAMS, JOHN M | 2004-03-10 |
| KA8TLR | NELLIS, DAVID F | 2004-10-26 |
| KB0RV | CUNNINGHAM, GREGORY J | 2015-07-10 |
| KB3ASW | EYLER II, CHARLES W | 2014-01-25 |
| KB3BCG | MC NANEY, EDWARD T | 2004-04-13 |
| KB3BWU | CAVALLO, STEVEN J | 2017-09-30 |
| KB3CA | Reifsnider Jr, Nelson D | 2014-02-12 |
| KB3DGK | MANNING JR, BOBBY J | 2019-06-07 |
| KB3DYZ | Hertig-Urban, MARIANNE R | 2019-06-21 |
| KB3EAG | MAGOS, HAROLD | 2019-05-22 |
| KB3FIO | Fishman, Jeffrey R | 2020-07-21 |
| KB3FRY | Lee, David K | 2010-10-15 |
| KB3GHG | Johnson, Jeffry C | 2021-07-08 |
| KB3GJF | Gigante, Victor R | 2012-06-02 |
| KB3HEQ | Thomson, Robert S | 2022-12-13 |
| KB3JRH | Kachursky, Robert | 2013-06-04 |
| KB3JRJ | Lufkin, David N | 2013-03-04 |
| KB3JRL | Lufkin, Daniel H | 2013-02-12 |
| KB3JYK | Haley, Patrick M | 2013-07-02 |
| KB3KLC | Kramer, Ralph D | 2014-01-10 |
| KB3KVA | Williams III, James S | 2014-02-18 |
| KB3KYS | Cathers, Robert H | 2004-03-29 |
| KB3LOP | Grosskopf, Steven J | 2014-08-14 |
| KB3MBA | Eanes, Leah M | 2014-12-31 |
| KB3MLA | Cody, Richard F | 2005-07-06 |
| KB3MMB | WILLIAMS, IBBIE J | 2015-06-09 |
| KB3MYI | Young, Jason A | 2005-12-02 |
| KB3NAA | FLORWICK, JAMES F | 2016-04-20 |
| KB3NJX | Gregory, Patrick D | 2016-06-28 |
| KB3NL | KEEPERS, LEONARD J | 2015-08-31 |
| KB3NOD | Gordon, Craig K | 2006-05-16 |
| KB3NQC | Simons, Michael A | 2016-05-18 |
| KB3ODN | Langel, Robert B | 2016-09-21 |
| KB3ONG | Smith Jr, William H | 2016-11-29 |
| KB3ONM | Talbott, Dennis K | 2016-12-05 |
| KB3OVZ | Gerlak, Stephane G | 2018-04-10 |
| KB3PJN | Shafer Mr, Ethan D | 2007-06-27 |
| KB3PVX | Paskowsky, Peter T | 2017-07-19 |
| KB3QML | Taylor, Brett | 2008-03-03 |
| KB3QOB | MUNSHOUR, SHARON L | 2008-03-10 |
| KB3RMN | Pinott, Angel M | 2018-11-16 |
| KB3SFF | Call, John B | 2020-07-11 |
| KB3TCC | McEntire, Brian S | 2019-10-03 |
| KB3TZN | KACHURSKY, NANCY M | 2010-02-17 |
| KB3TZO | KACHURSKY, JONATHAN A | 2010-02-17 |
| KB3TZP | KACHURSKY, BETHANY R | 2010-02-17 |
| KB3UNL | CHRISTIN JR, RICHARD A | 2020-02-28 |
| KB3UOJ | Angleberger, Elaine A | 2010-05-24 |
| KB3VCT | Ramhoff, Deanna D | 2010-09-20 |
| KB3VPH | La Chapelle, Fedner | 2021-01-20 |
| KB3WFI | Connor, Edward R | 2021-04-05 |
| KB3WFU | CONNELLY, DAVID C | 2011-07-11 |
| KB3WND | McNamara Jr, David M | 2021-09-28 |
| KB3WNT | GHAFFAR, TEHSIN U | 2021-07-27 |
| KB3WSD | Lucas, Guilday L | 2011-11-23 |
| KB3YVM | Long, Kurt | 2012-06-18 |
| KB3YXT | FISHER, JAMES F | 2012-07-02 |
| KB3ZVB | SCHALL SR, MELVIN J | 2023-01-24 |
| KB4BKV | EDWARDS, JOHN W | 2016-08-23 |
| KB9QFQ | Sun, Sarah A | 2017-11-30 |
| KC3ASR | Gregory, Roberts S | 2013-06-11 |
| KC3AUH | Daly, Elizabeth A | 2013-06-17 |
| KC3AWO | Swann, Christopher N | 2013-07-03 |
| KC3BCD | Pocius, Jonathon A | 2013-08-13 |
| KC3BHK | Davy, Bradley K | 2013-09-19 |
| KC3BMJ | GANN JR, RALPH C | 2013-11-04 |
| KC3BT | TUCK JR, OVERTON M | 2016-12-07 |
