The Federal Communications Commission (FCC) has granted a total of 62 licenses and call signs in the category of Amateur 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 |
|---|---|---|
| AB3DG | Bearden, David K | 2016-10-26 |
| K3RY | Yenoli, Roy J | 2016-10-04 |
| KA3UNQ | ELLIOTT, JAMES C | 2020-09-02 |
| KA3ZGT | Hamilton, Sarah A | 2011-06-10 |
| KB0FEL | LEPLEY, BRUCE A | 2010-02-23 |
| KB3FKZ | FORT, ADAM | 2020-06-10 |
| KB3GTR | CRAWFORD, WILLIAM R | 2021-06-11 |
| KB3HUS | Spiers, George E | 2022-01-05 |
| KB3IAI | Mishaga, Chris A | 2022-03-23 |
| KB3JWL | Hanko, David J | 2013-03-26 |
| KB3KSI | Hanko, Andrew B | 2013-11-13 |
| KB3NBD | Flanagan, John V | 2006-01-23 |
| | ||
| KB3NTZ | Reeves, Zachary A | 2017-11-18 |
| KB3OLR | Hamilton, Everett A | 2016-12-13 |
| KB3PCV | Howell, SANDRA L | 2007-05-07 |
| KB3PSK | Wills, Andrew J | 2017-08-01 |
| KB3QFL | Lepley, James A | 2018-06-23 |
| KB3QFM | Lepley, Amanda J | 2017-12-05 |
| KB3QZS | KRAMER, FRANK H | 2008-04-14 |
| KB3VEJ | Bruno, Nathan A | 2010-10-12 |
| KB3YBK | Grim, Ernest E | 2012-02-13 |
| KB8OEF | GRIMES, STEPHEN A | 2014-02-03 |
| KC3BMP | Frankford, Mark T | 2013-11-04 |
| KC3COO | Lepley, Lorraine J | 2014-04-14 |
| KC3DCS | Segora, Oriel A | 2014-06-25 |
| KC3FIG | Porter, Dennis J | 2015-07-29 |
| KC3FPQ | Hutchison, Timothy P | 2015-10-05 |
| KC3GWS | Briggs, Richard D | 2016-04-08 |
| KC3HTX | Pagan Mr, Victor M | 2016-09-19 |
| KC3IAX | Sauvage, Guillaume | 2016-11-01 |
| KC3KFM | Mlynarski, Andrew K | 2017-11-13 |
| KC3LMR | Willhite, Benjamin H | 2018-05-22 |
| KC3MSP | ROUHI, AARON | 2019-01-30 |
| KC3OCM | Osborn, Andrew L | 2019-09-24 |
| KC3PRK | Sierco, Nicholas T | 2020-07-21 |
| KC3PZH | Mencik, Robert | 2020-09-14 |
| KC3QOO | PARIDES, KONSTANTINA A | 2020-11-23 |
| KC3RBE | Cruz Rentas, Angel A | 2021-01-27 |
| KC3TXB | Traub, Kevin W | 2022-04-11 |
| KC3UIX | SERAFIN, ROBERT | 2022-06-11 |
| KD0WSH | Bond, Kirk L | 2013-09-25 |
| KD6BOH | BAKER, JASON B | 2021-08-03 |
| KF6ZWL | Latimer, Steve B | 2010-01-25 |
| KH6VX | FLOYD, SCOTT A | 2013-05-29 |
| KK4KPY | Webster, Douglas J | 2023-03-25 |
| N3BHZ | KELLOGG III, ROBERT H | 2006-03-07 |
| N3CHR | MOORE, ROBERT C | 2007-08-23 |
| N3FTB | WHITE, ROBERT E | 2018-12-17 |
| N3JGD | BALLMAN, GERALD A | 2021-05-04 |
| N3JOE | COLES, RICHARD H | 2012-08-01 |
| N3KZU | THOMPSON, MAUREEN A | 2021-08-31 |
| N3OHD | Mishaga, LAURA C | 2023-01-31 |
| N3REE | SIERCO, FRED L | 2013-10-17 |
| N3SCP | WOOD, RICHARD A | 2014-11-12 |
| N3WOF | Boller, John R | 2015-10-16 |
| W3CVD | OLSON, CHARLES F | 2015-10-24 |
| W3EAB | LISLE, HAMPTON H | 2007-05-09 |
| W3HZF | VOURLOS, NICK J | 2004-11-19 |
| W4OCQ | JURGENS, LOUIS A | 2016-11-08 |
| WA3UDY | JACOBS SR, NOLAN L | 2017-05-05 |
| WB3BQN | GREGORY, TIMOTHY C | 2018-03-16 |
| WB3HOS | LISLE, ELIZABETH B | 2007-04-09 |
