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 |
|---|---|---|
| KD3N | JOY, JAMES R | 2009-10-13 |
| KD4DJW | POWER, WILLIAM E | 2011-06-14 |
| KD4DJX | POWER, KAREN A | 2011-06-14 |
| KD6DPR | Troup, Dennis B | 2021-11-13 |
| KE3YP | JOHANSEN, HENRIK | 2017-07-18 |
| KE4GBJ | GREEN, KENDALL B | 2013-11-27 |
| KE4QNO | PERRY, KRISTOPHER K | 2014-09-03 |
| KE5KXK | Pomeroy, Matthew G | 2017-10-03 |
| KE7SFK | Potluri, Murali | 2018-02-27 |
| KF4YPN | FERGUSON, GLEN G | 2018-03-20 |
| KG4EYA | WALKER, EVELYN A | 2019-07-19 |
| KG4QXE | Lively Jr, Charles E | 2021-12-09 |
| | ||
| KJ4WRR | Parker, Alexander E | 2020-06-25 |
| KJ7OI | ISAKSON, JAMES J | 2016-06-30 |
| KN4ELI | Lakie, James J | 2017-07-10 |
| KS4II | LORENTZ, WILLIAM R | 2014-01-24 |
| N0YFG | JORDRE, SHANNON T | 2013-07-08 |
| N2NSR | CARPENTER, BRETT J | 2011-06-22 |
| N3AGM | Bowersox, Orville C | 2015-02-19 |
| N3AMF | MC SHERRY JR, JAMES | 2019-12-03 |
| N3APO | POLLACK, NORWIN L | 2005-09-22 |
| N3BGL | BAUMLER, ROBERT K | 2016-01-05 |
| N3COP | Hugglestone, Arthur D | 2015-08-06 |
| N3DGK | MARTIN, LARRY C | 2018-12-19 |
| N3DWL | MILLS, SHARON L | 2014-03-05 |
| N3EDH | SOBUS, PAUL G | 2020-10-22 |
| N3ELF | CRETTI JR, JAMES J | 2018-11-28 |
| N3HTA | RIDGLEY, JAMES T | 2009-10-27 |
| N3HYM | Adkins Jr, Ray V | 2012-01-26 |
| N3IGM | RICE, STEVEN L | 2020-05-21 |
| N3ITA | Fogle, Tim E | 2020-11-25 |
| N3JGK | SNYDER, HOWARD R | 2011-02-01 |
| N3JXD | LAUGHLIN, WILLIAM H | 2011-06-07 |
| N3KLY | ROGERS, ARCHIE E | 2021-06-15 |
| N3KNI | KIRK, HOWARD E | 2011-09-26 |
| N3KQU | Chapple, Patrick W | 2021-09-10 |
| N3LFT | WALTERS, DALE L | 2011-12-12 |
| N3LTW | KIRK, GAIL F | 2012-08-04 |
| N3LXT | KEFAUVER, JOSEPH K | 2012-01-10 |
| N3MRJ | KEFAUVER, DONALD R | 2012-03-27 |
| N3MWX | LAZZARO, SCOTT M | 2012-04-03 |
| N3NON | MELDRUM, BRYANT K | 2012-09-18 |
| N3PXL | SMITH, GARRICK E | 2013-06-14 |
| N3QGQ | MAUCK, DEBRA A | 2013-07-31 |
| N3QHS | HERSHBERGER, ROBERT W | 2013-09-07 |
| N3QYM | LEWIS JR, BART W | 2003-11-11 |
| N3QYT | SOPATA, LOUIS J | 2003-09-09 |
| N3RO | OGDEN, RICHARD B | 2015-02-24 |
| N3SRG | KOBUS, BRIAN R | 2014-06-14 |
| N3TCP | WAHL, EUGENE R | 2014-06-04 |
| N3TOM | HUGGINS, JOHN W | 2014-09-22 |
| N3TWN | COLALUCA III, CARMINE J | 2014-09-17 |
| N3TWV | STOCKMAN, MICHAEL S | 2015-03-10 |
| N3UES | SASTRY, ANIL K | 2016-01-20 |
| N3VOH | Cochran, Michael D | 2015-03-14 |
| N3VSL | LAZZARO, GREGORY J | 2011-09-16 |
| N3VTP | COCHRAN, LYDIA H | 2015-05-29 |
| N3WBC | HUTTON, SANDRA K | 2015-09-11 |
| N3WBM | HUTTON, SHAUN T | 2015-09-11 |
| N3WCX | LANG, K Michael | 2015-06-30 |
| N3WFH | BOBAN III, VINCENT R | 2016-07-30 |
| N3WLD | FAITH, HARRY E | 2015-11-28 |
| N3WMX | Pixton, David H | 2015-09-30 |
| N3XQM | SPEICHER, ROBERT E | 2016-03-29 |
| N3YGM | BOYD, LAURENCE M | 2016-10-12 |
| N3YOL | CANGEMI, MICHAEL V | 2016-12-21 |
| N3ZTL | Karapetian 446, Warren V | 2017-09-16 |
| N3ZXM | HANES, KENNETH E | 2007-09-06 |
| N4XHC | GOSSARD, CRAIG C | 2020-05-29 |
| N5EQ | ROSSIO, JEFFREY L | 2016-03-15 |
| N7NJK | Rich, Kenneth J | 2010-08-03 |
| N8BML | HARTMAN SR, DONALD R | 2009-08-20 |
| NO1G | GLATFELTER, ALEXANDER I | 2017-04-25 |
| W3BFE | Masser Jr, Charles C | 2015-01-20 |
| W3CQH | GORDEN, HOWARD S | 2007-04-27 |
| W3EWL | HILL, STANLEY L | 2019-10-31 |
| W3FOA | BAUMAN, STEPHEN R | 2006-05-02 |
| W3HNL | Christin SR, Richard A | 2017-11-28 |
| W3JHN | ACKERMAN, FREDERICK N | 2016-10-31 |
| W3QDT | GUYTON, LEO R | 2004-04-27 |
| W3VUH | SNYDER, ROBERT F | 2016-08-31 |
| W6PQK | BLAKESLEY, RALPH W | 2006-02-14 |
| W8CFW | GREENE, WILLIAM A | 2015-08-28 |
| WA2EBP | HILL, DAVID R | 2013-02-27 |
| WA3CGU | DORSEY, GLENN S | 2015-11-17 |
| WA3FUJ | DEVILBISS, JAMES V | 2020-05-26 |
| WA3GDC | METCALF, RICHARD M | 2012-05-08 |
| WA3KHE | HIGGINS SR, CHARLES C | 2004-08-27 |
| WA3KLH | STICKLEY JR, VERNON B | 2005-05-05 |
| WA3LHC | MECLER, LEO M | 2017-03-02 |
| WA3LTN | NACE, ALBERT J | 2013-06-25 |
| WA3ROA | KNISELY, RALPH F | 2008-05-19 |
| WA3VZL | HEWETSON, JOHN | 2014-07-17 |
| WA3WBN | CHECK JR, WILLIAM S | 2013-12-07 |
| WA3YIK | GOLDGRABEN, GERALD R | 2018-01-10 |
| WA3ZCV | ROBINSON JR, EARL J | 2016-11-18 |
| WA4UWD | BONNER III, EMMETT P | 2021-02-23 |
| WB3BCX | WEEKS, HENRY T | 2015-06-13 |
| WB3BPP | CONKLIN, RICHARD C | 2006-09-13 |
| WB3FAF | O NEAL, WILLARD N | 2006-12-08 |
