The Federal Communications Commission (FCC) has granted a total of 921 licenses and call signs in the category of Amateur license in Boulder, Colorado. 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 |
|---|---|---|
| AA0NS | Key, Alicia M | 2017-10-20 |
| AA9PW | TWIGGER, SIMON N | 2015-12-22 |
| AB0DH | HEDRICK, EVERETT W | 2013-03-05 |
| AB0FS | LAYHER, INGOLF | 2016-03-18 |
| AB0K | LAWRENCE, GEORGE M | 2015-02-03 |
| AB0KB | Stearns, Stephen C | 2018-10-04 |
| AB0KG | Makarov, Nikolai A | 2010-02-10 |
| AB0MH | Braitberg, Michael F | 2011-11-16 |
| AB0MY | Eberle, William R | 2017-01-12 |
| AC0IF | DiGennaro, Thomas M | 2017-02-21 |
| AC0JL | KRASSA, ROBERT F T | 2014-07-24 |
| AC0JQ | Beam, Palmer H | 2015-05-21 |
| | ||
| AC0LK | Clason, Steven H | 2018-02-15 |
| AC0XJ | Popovic, Zorana | 2011-04-29 |
| AC3EN | JI, Kaixuan | 2019-05-17 |
| AD0DU | Schafer, Scott R | 2013-04-29 |
| AD0EB | Ward, Bryan R | 2013-04-29 |
| AD0I | WOODS, JOSEPH M | 2014-03-04 |
| AD0IW | Brown, Kevan L | 2014-04-04 |
| AD0LC | Chadha, Rohan | 2014-11-06 |
| AD0LX | Thacker, Kunj A | 2014-12-17 |
| AD0LY | Deodhar, Kaushal | 2014-12-17 |
| AD0LZ | Josyula, Sindhura | 2014-12-17 |
| AD0MA | Juneja, Mayank | 2014-12-17 |
| AD0MB | Kulkarni, Vineet S | 2014-12-17 |
| AD0MC | Hussain, Moiz | 2014-12-17 |
| AD0MD | Murugesan, Manigandaraja | 2014-12-17 |
| AD0ME | Sundharan, Krishna Prabhu | 2014-12-17 |
| AD0MF | Shah, Jaimin H | 2014-12-17 |
| AD0OC | Story, Judith | 2014-02-03 |
| AD0QE | Hartzell, David | 2022-06-01 |
| AD0RA | EL-TAWEEL, HAMAD A | 2012-12-19 |
| AD0VX | Stearns, Colin T | 2011-04-05 |
| AD0WO | Daly, John J | 2016-12-22 |
| AD0XW | White, Christopher C | 2017-03-07 |
| AD0YY | Buhlig, Blake E | 2017-08-11 |
| AD0ZO | Altman, Gabriel F | 2017-10-24 |
| AD0ZV | Delbarba Jr, Brian P | 2016-07-07 |
| AE0AM | Bennett, John K | 2018-01-09 |
| AE0EH | Waltman, Steven B | 2018-11-06 |
| AE0FQ | Pan, Luitien | 2019-04-02 |
| AE0IM | McKnight, Douglas J | 2020-02-13 |
| AE0JJ | FOX, JASON R | 2020-06-03 |
| AE0KJ | Grund, Christian J | 2020-08-10 |
| AE0OJ | Ware, John D | 2014-09-10 |
| AE0QP | Harris, Adrian | 2022-03-21 |
| AG6QP | Brockus, Denis | 2012-06-08 |
| AI0P | MAHONEY, ROBERT F | 2014-05-07 |
| AI6ZH | Longnecker, Matthew R | 2017-10-10 |
| AJ0J | Premena, S | 2016-11-01 |
| AJ6W | STROM, MARK G | 2017-03-30 |
| AK0X | Bixby, George E | 2014-04-24 |
| K0DK | KIEFER, RICHARD E | 2015-12-03 |
| K0DWT | KOMAREK, ERNEST L | 2016-02-03 |
| K0ETN | WOODSOME III, FREDERIC O | 2008-04-22 |
| K0HEH | QUINN, JACK D | 2017-11-29 |
| K0HPE | TARY, JOHN J | 2006-08-28 |
| K0IHX | SALAMAN, ROGER K | 2016-08-30 |
| K0OYZ | LARSEN, EZRA B | 2016-12-01 |
| K0RZ | Mc Caa Jr, William D | 2015-05-19 |
| K0SHG | ANUTA, KARL F | 2015-07-16 |
| K0TEP | SCOTT JR, WINSTON W | 2013-12-27 |
| K0WKN | Fisher, Ronald M | 2006-02-14 |
| K3KLE | Kistler Jr., David W | 2017-04-18 |
| K3NA | SCACE, ERIC L | 2015-11-10 |
| K4DWB | Andrus, Donald W | 2015-11-09 |
| K5AFJ | SIMPSON JR, WALTER C | 2016-01-05 |
| K5JK | SHYKULA, THOMAS J | 2017-12-06 |
| K9ETU | Thompson III, Alexander M | 2014-06-10 |
| KA0CKS | ADAIR, ROBERT T | 2014-06-20 |
| KA0DXM | FERGUSON, RICHARD A | 2013-11-26 |
| KA0JUI | NODTVEDT, DONALD P | 2005-11-10 |
| KA0RGT | PUTORTI, JAMES | 2015-12-16 |
| KA0YEC | HINE STAGER, ILSE S | 2021-10-08 |
| KA3ZGF | KAHLE, DUNCAN M | 2021-08-11 |
| KA7IYF | JOCHIM, KENNETH J | 2015-10-28 |
| KA9MDE | POCHAY, CHRYSTAL L | 2017-01-10 |
| KB0BCB | CUSICK, JAMES E | 2017-04-03 |
| KB0DDF | KOPEL, DAVID B | 2014-08-28 |
| KB0DR | HUBBARD, MICHAEL W | 2017-11-28 |
| KB0EBD | Peddie, Richard B | 2020-03-21 |
| KB0GY | MC QUERRY JR, JAMES P | 2013-11-05 |
| KB0KZR | Sturtz, William M | 2013-03-16 |
| KB0MMN | SCHWARTZ, BRUCE S | 2014-02-25 |
| KB0NAS | Kretke, Doshia D | 2014-03-28 |
| KB0NZE | COOK, FORREST E | 2004-04-26 |
| KB0OAB | WAGNER, BURT | 2014-10-06 |
| KB0OAE | BALASTER, AMMON A | 2004-04-27 |
| KB0PFQ | STRAUS, MARVIN J | 2004-07-27 |
| KB0PIX | GUP, ANDREW E | 2014-09-13 |
| KB0QAJ | HEDBERG, RAY A | 2004-12-22 |
| KB0QNQ | GUP, LINCOLN D | 2016-03-08 |
| KB0QXS | HARNESS, PAUL A | 2005-03-23 |
| KB0QYA | STURTZ, ANITA L | 2015-01-16 |
| KB0ROM | HARNESS, BLAIR T | 2016-05-27 |
| KB0SHU | HARNESS, SUZANNE A | 2015-04-29 |
| KB0SHZ | DEMOS, DOUGLAS C | 2015-09-22 |
| KB0SIY | ARMSTRONG, RICHARD C | 2005-02-10 |
| KB0TAX | HORNE, JONATHAN E | 2015-07-21 |
| KB0TBA | KALIN, CARL | 2015-07-16 |
