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 |
|---|---|---|
| KK6SQL | Young, Penny I | 2015-03-19 |
| KK6SQM | ALCORN, BRUCE W | 2015-03-19 |
| KK6SQN | Vermeesch, Mike J | 2015-03-19 |
| KK6SQO | Smith, Charles H | 2015-03-19 |
| KK6SQS | Prendergast, Ryan P | 2015-03-19 |
| KK6THN | De Laet, Wouter | 2015-04-16 |
| KK6TKX | Berg, Stephen L | 2015-04-21 |
| KK6TVQ | Gantt, Tifton C | 2015-05-01 |
| KK6TVZ | Mittura, John A | 2015-05-01 |
| KK6TWF | Cassdanos, Andrew A | 2015-05-01 |
| KK6TWL | Harrington, Charles | 2015-05-01 |
| KK6UEK | WADSWORTH, CINDY | 2015-05-19 |
| | ||
| KK6UPR | Simonenko, Valeriy | 2015-06-08 |
| KK6VBK | Gritzer, Jonathan T | 2015-06-30 |
| KK6VBN | Cabezas, Irving R | 2015-06-30 |
| KK6VQB | Aquino, Jeffrey F | 2015-07-29 |
| KK6WQR | HONG, BRYAN J | 2015-10-01 |
| KK6WTI | MILLER, MARK S | 2015-10-02 |
| KK6WTT | STROM, MATTHEW J | 2015-10-02 |
| KK6WUV | Gibson, Larry L | 2015-10-05 |
| KK6YFT | Furtado, Michael | 2015-10-27 |
| KK6YOB | Schneider, Cameron D | 2015-11-09 |
| KK6YRL | Casparie, Dennis G | 2015-11-10 |
| KK6ZCT | Kober, Richard T | 2015-12-03 |
| KK6ZCU | Clark, Judi | 2015-12-03 |
| KK6ZMY | Rasmussen, Carl T | 2015-12-21 |
| KK6ZZE | Teruya, Walter K | 2016-01-27 |
| KM6AOK | ELLIS, PRESCILLA M | 2016-02-19 |
| KM6AOP | HILL, CHARLES H | 2016-02-19 |
| KM6AQC | TUCKER, STEPHEN A | 2016-02-22 |
| KM6AUX | Stofer, Gerhard | 2016-03-01 |
| KM6BCV | Lock Jr, John H | 2016-03-15 |
| KM6BCY | Anderson 687, Roger P | 2016-03-15 |
| KM6BCZ | O'Malley, Denis M | 2016-03-15 |
| KM6BDB | Jenkins, Howard L | 2016-03-15 |
| KM6BDM | Wright, Jason | 2016-03-16 |
| KM6BNT | Hendricks, Joe E | 2016-03-29 |
| KM6BXG | Martello, Jonathan | 2016-04-14 |
| KM6BXH | Martello, Lyudmila | 2016-04-14 |
| KM6CHQ | Zinn, Galen R | 2016-05-02 |
| KM6CNI | White, Grant P | 2016-05-09 |
| KM6CSC | NULL, JEFF | 2016-05-13 |
| KM6DPK | MINADEO, MICHAEL E | 2016-06-23 |
| KM6DUS | Harvey, Erin | 2016-07-13 |
| KM6DUX | Shergill, Jaskaran S | 2016-07-13 |
| KM6ESJ | Hunt, Robert C | 2016-08-23 |
| KM6EYK | Polifrone, Kyrel | 2016-08-29 |
| KM6FND | HARRIS, JEFFREY O | 2016-09-30 |
| KM6FOC | TARANTINO, JEANETTE A | 2016-09-30 |
| KM6FOG | CLARK, JACOB D | 2016-09-30 |
| KM6GAH | Farley II, William T | 2016-10-27 |
| KM6GNI | Nascimento Filho, Adalto T | 2016-11-09 |
| KM6GVP | Zachry, David L | 2016-11-28 |
| KM6GWY | Lyubinin, Michael J | 2016-12-01 |
| KM6GXA | Rogers, Daniel J | 2016-12-01 |
| KM6IXA | Earley, Denis J | 2017-03-08 |
| KM6IXC | Smith, Mark R | 2017-03-08 |
| KM6IXD | Carty, Peter J | 2017-03-08 |
| KM6IXG | Holtslander, Emmette K | 2017-03-08 |
| KM6IXH | Prell, Bruce | 2017-03-08 |
| KM6IXI | Amell, Michael D | 2017-03-08 |
| KM6IXS | Benedickt Earley, Carol A | 2017-03-08 |
| KM6JAV | Tom, Wah C | 2017-03-13 |
| KM6JBW | MARTIN, LISA Y | 2017-03-13 |
| KM6JCL | SHRYACK, JOSHUA L | 2017-03-13 |
| KM6JDK | CHAVEZ, ALEX J | 2017-03-13 |
| KM6JDX | LARE-MASTERS, CARLOS | 2017-03-13 |
| KM6JXQ | Phillips, Joseph S | 2017-04-17 |
| KM6KEY | POWERS, KIMBERLY K | 2017-04-27 |
| KM6KRQ | Schneider, Joy R | 2017-05-26 |
| KM6KS | BUTLER JR, JOEL | 2021-08-10 |
| KM6KWX | Santomieri, Joshua L | 2017-06-05 |
| KM6LZL | Scheer, Rodney J | 2017-07-28 |
| KM6NFC | Kulisek, Jan | 2017-10-16 |
| KM6NGJ | Keogh, Natalie | 2017-10-19 |
| KM6NGL | Roberts, Ronald W | 2017-10-19 |
| KM6NGN | Donelan Jr, Sean H | 2017-10-19 |
| KM6NGO | Halvorson, Robert P | 2017-10-19 |
| KM6NKR | REYNOLDS, BRIAN D | 2017-10-24 |
| KM6NSU | Fookes, Joshua J | 2017-10-31 |
| KM6NSW | Fookes, Deborah D | 2017-10-31 |
| KM6ORJ | Voss, Michael T | 2017-11-29 |
| KM6OZB | Wilson, Janet M | 2017-12-11 |
| KM6POL | Wright, Thomas W | 2018-01-22 |
| KM6QJ | SELK, TRAVIS E | 2014-03-04 |
| KM6QKE | DOIG, CHRISTOPHER J | 2018-02-16 |
| KM6QWW | Graham, Douglas K | 2018-02-27 |
| KM6RFX | Hadden, Lorin C | 2018-03-08 |
| KM6RFZ | Ichiroku, Koki E | 2018-03-08 |
| KM6RGA | Jones, Dennis L | 2018-03-08 |
| KM6RGB | Waddington, Patricia T | 2018-03-08 |
| KM6RGC | Lodin, John F | 2018-03-08 |
| KM6RGD | Hadden, Cynthia E | 2018-03-08 |
| KM6RGE | Levi, Dan | 2018-03-08 |
| KM6RGG | Loper, Michael B | 2018-03-08 |
| KM6RGH | Kelly, Steven X | 2018-03-08 |
| KM6RJX | Richmond, Brian J | 2018-03-16 |
| KM6RLG | Diablo Four Wheelers Jeep Club Inc | 2018-03-19 |
| KM6SDC | Phinney, George M | 2018-04-17 |
| KM6SGC | Lesley, Robert E | 2018-04-19 |
