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 |
|---|---|---|
| WB3FWF | HAMMEL, ROY A | 2007-11-27 |
| WB3GYN | CARSON, CHARLES F | 2014-03-06 |
| WB3HXL | HAMILTON, DANIEL L | 2004-10-15 |
| WB3KDS | FRIES, ROBERTA V | 2016-09-21 |
| WB3KQU | Warnock, Harold O | 2018-02-27 |
| WB4WED | HOWARD, HOPE M | 2005-04-06 |
| WB5FZI | VESTAL, DANIEL R | 2018-07-10 |
| WB8BPU | MARTIN, DEAN A | 2016-03-14 |
| WD6AEK | ARMFIELD, REBECCA E | 2018-08-01 |
| WP4KKX | SANTIAGO, ABNER | 2011-06-14 |
| WP4R | PINOTT GARCIA SR, OSWALD | 2016-01-08 |
| WU4L | ROSNER, STUART B | 2020-09-09 |
