The Federal Communications Commission (FCC) has granted a total of 508 licenses and call signs in the category of Amateur license in Concord, California. 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 |
|---|---|---|
| AC6KE | SCHWEICKERT, CHRISTOPHER J | 2015-12-02 |
| AC6VZ | ENGEL, HAL V | 2005-07-22 |
| AE6EV | Goemmel, Sylvia C | 2013-09-19 |
| AF6HQ | Morgan, Brent | 2017-09-27 |
| AF6RJ | Primus, John L | 2018-01-29 |
| AG6TG | Lester, Josh | 2012-05-22 |
| K6LCC | CHAUVIN, THOMAS V | 2006-07-11 |
| K6LGP | Hose, Charles F | 2008-03-20 |
| K6OKB | BLACK, GUY H | 2018-07-19 |
| K6PWF | MOLLBERG, RICHARD D | 2009-03-20 |
| K6XC | LUTTRINGER, RONALD P | 2012-11-27 |
| KA5YOW | BROWN, JAMES H | 2016-10-22 |
| | ||
| KA6ECK | REED, RICHARD B | 2004-10-21 |
| KA6JEL | BEDDOES, PAMELA P | 2007-01-08 |
| KA6JPX | BEDDOES, DUANE A | 2006-12-19 |
| KA6MZR | STOICICH, THOMAS J | 2016-10-19 |
| KA6USJ | FERGUSON, GEORGE E | 2018-09-12 |
| KA6VIJ | Stamatelos, John | 2018-05-10 |
| KB6FIT | MILLER, THOMAS J | 2005-04-05 |
| KB6FON | MILLER, ANNA | 2004-03-01 |
| KB6KFY | MERRILL, ROBERT T | 2006-08-24 |
| KB6MGD | JONES, LUTHER E | 2006-01-10 |
| KB6RMT | Burke, Michael J | 2017-08-01 |
| KB6RSY | GEORGE, JOHN E | 2012-08-02 |
| KB6TGI | CASAZZA JR, LESLIE M | 2013-04-26 |
| KB6UB | JENSEN JR, WILLIAM M | 2005-03-05 |
| KB6UC | STEWART, CHARLES R | 2014-02-27 |
| KB6WTT | LIM, WENDY L | 2008-06-30 |
| KB7BGM | Dawson III, Elbert A | 2008-06-17 |
| KC6DKE | NYE, WILLIAM C | 2009-02-12 |
| KC6JBW | BAUGHMAN, ROY D | 2022-07-06 |
| KC6JXW | MC KILLEN, MARY A | 2012-09-10 |
| KC6QHH | FULLER, DENNIS C | 2011-01-11 |
| KC6SAV | MC GLOTHIN, BART S | 2021-02-02 |
| KC6VOL | TORRES, GUADALUPE | 2012-12-03 |
| KC6YCJ | ALLEN, STEVEN D | 2011-04-26 |
| KD5BXR | TAYLOR, JOHN A | 2006-11-29 |
| KD6GLR | BUTLER, JOEL | 2011-12-14 |
| KD6IZX | SHARON, MARC W | 2012-03-07 |
| KD6KFU | OLSON, MICHAEL T | 2013-10-17 |
| KD6PNO | SHAPPEE, JOYCE D | 2012-12-05 |
| KD6QZC | LATHAM, CHARLES N | 2013-04-16 |
| KD6ZUJ | MILLER, LARRY L | 2014-08-12 |
| KE6DAX | HOPKINS, PAUL N | 2013-07-30 |
| KE6DEC | NEEF, JOSEPH V | 2013-08-08 |
| KE6ELP | Roush, Bertha M | 2013-10-17 |
| KE6GKQ | LAVIS, JUSTIN M | 2015-07-22 |
| KE6HDJ | BATES, SCOTT J | 2014-04-19 |
| KE6IDM | WELLES, JOHN D | 2014-04-03 |
| KE6ITY | CHAN, LILY | 2014-06-20 |
| KE6KAX | RAMOS, LLEUWELYN Y | 2016-01-05 |
| KE6KER | YOUNG, DANIEL K | 2014-06-11 |
| KE6LCE | NELSON, GLEN A | 2014-09-13 |
| KE6MDA | Whitely, Barbara L | 2014-07-02 |
| KE6OEM | Barton, Bruce F | 2015-01-30 |
| KE6OFE | JANKE, ALEXANDER A | 2004-08-31 |
| KE6OKP | MC CALL, LINDSAY L | 2014-09-06 |
| KE6PPM | COOK, DONNA A | 2014-10-06 |
| KE6QPH | HENDERSON, GABRIELLE G | 2014-11-06 |
| KE6QQG | WILLIAMS, PAUL A | 2014-12-10 |
| KE6SSO | KARP, DOUGLAS L | 2015-02-02 |
| KE6VOO | MILLER, RUTH A | 2015-10-22 |
| KE6VRR | MUN, DEVIN N | 2015-06-06 |
| KE6WJQ | ARVIDSON, LESTER A | 2005-05-04 |
| KE6WPD | ENGEL, OFELIA L | 2005-07-22 |
| KE6YAU | BARTON, MARY T | 2015-09-12 |
| KE6ZJE | HOU, JOHNNY C | 2015-10-28 |
| KE6ZYU | LOUIS, KEITH A | 2005-12-01 |
| KE6ZZE | ALMEDA, GARY J | 2015-11-24 |
| KE6ZZG | MC INTYRE, ROBERT E | 2015-09-19 |
| KF6CWU | VAN BUSKIRK SR, GILBERT A | 2006-01-12 |
| KF6CWZ | HEDGPETH, LAURA J | 2006-09-02 |
| KF6DU | ECKERLEY, C LEONARD | 2007-04-26 |
| KF6DY | MASSONE, GARY E | 2019-07-11 |
| KF6EUM | Hart, Jeffrey L | 2006-07-11 |
| KF6FQF | Perl, Yona | 2006-04-05 |
| KF6HGQ | HENRY, KAREN D | 2016-12-13 |
| KF6HLL | CIARAMITARO, THOMAS R | 2016-09-22 |
| KF6HLN | CIARAMITARO, TOMMY J | 2016-09-30 |
| KF6HSY | JANISZEWSKI, KRZYSZTOF A | 2006-12-27 |
| KF6ISF | YAMANE, AKEMI | 2016-12-15 |
| KF6KHZ | CIARAMITARO, WENDY J | 2017-10-10 |
| KF6KOM | FROLOFF, SERGE B | 2007-01-29 |
| KF6OBN | MOORE, DEBORAH A | 2017-10-17 |
| KF6OQW | SUTHERLAND, JAMES D | 2017-09-28 |
| KF6R | STEWART, JAMES A | 2017-04-04 |
| KF6WHW | MOORE, RODNEY D | 2019-05-02 |
| KF6WHY | ROSSBERG, RUBY | 2009-02-18 |
| KG6AUY | Moore, Michael K | 2010-01-06 |
| KG6CZY | Angvick, Ellen M | 2020-08-04 |
| KG6EYE | Sylls, Gene | 2020-11-13 |
| KG6FQB | Hendershott, Michael C | 2011-01-31 |
| KG6HLV | Styles, Elizabeth E | 2021-07-07 |
| KG6IOE | Hernlem, Bradley J | 2011-10-12 |
| KG6JRU | Riekki, Kevin D | 2022-04-27 |
| KG6LIB | Robason, Robert E | 2012-02-18 |
| KG6MLS | Gold, Noah K | 2022-07-08 |
| KG6NSK | LAWRENCE, LEE D | 2013-07-06 |
| KG6PID | Thompson, Steven P | 2013-01-07 |
| KG6PQZ | BUSH, WILLIAM A | 2013-02-06 |
