The Federal Communications Commission (FCC) has granted a total of 268 licenses and call signs in the category of Amateur license in Castro Valley, 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 |
|---|---|---|
| AB6BR | FLUSCHE, ANTHONY S | 2014-02-25 |
| AE6XC | WHEATLEY II, GEORGE R | 2014-12-02 |
| AI6LB | Abaziz, Ahmad Azlan | 2015-08-14 |
| AI6VE | Kajiki, Moriya | 2017-02-10 |
| AI6YB | Silman, Aaron L | 2017-07-18 |
| AJ6EV | Discher, Jason P | 2018-08-21 |
| AJ6NA | White, Andrew G | 2016-04-18 |
| K6JNW | ANDERSEN, ARTHUR C | 2007-04-12 |
| K6KEO | Steiner, Ronald M | 2018-02-20 |
| KA6FIY | ALGA, GENE A | 2015-11-11 |
| KA6OKK | Hoppstetter, Sharon K | 2008-08-27 |
| KA6OKL | HOPPSTETTER JR, JOHN F | 2008-04-29 |
| | ||
| KA6YKG | FANCHER, DAVID C | 2013-12-10 |
| KB6ENY | GOLDBERG, JAY L | 2014-06-04 |
| KB6IBX | Vallio, Gwendolyn M | 2014-11-26 |
| KB6LDV | WRIGHT, MARLENE E | 2015-10-27 |
| KB6PNJ | BARRETTA, ENRICO N | 2016-06-30 |
| KB6RCA | CRISPIN, KENT J | 2007-04-17 |
| KB6XA | FERRELL, WILLIAM M | 2014-09-11 |
| KB9OLM | DVORKIN, VLADIMIR | 2016-06-21 |
| KC2TYF | Anderson, Whitney J | 2018-07-10 |
| KC6MGU | BASTIEN, ROGER L | 2010-12-15 |
| KC6QCI | ADAMS, GLENN D | 2012-01-04 |
| KC6RTO | PENDLETON JR, JERALD R | 2013-09-04 |
| KC6WBV | Terry, Frank W | 2012-12-10 |
| KC6WCG | JORY, MICHAEL W | 2003-08-25 |
| KC9HTI | Yust, Amber A | 2015-04-21 |
| KD6IOC | HUMPHREY, WALTER K | 2012-01-23 |
| KD6ZQ | WRIGHT, LINDA L | 2006-02-02 |
| KE6DMY | SCHUMANN, JAMES C | 2003-08-25 |
| KE6EXQ | AQUINO, JOHN J | 2003-10-28 |
| KE6FCC | COBLER, BRETT S | 2013-10-31 |
| KE6FTY | Edwall, Iver E | 2013-12-23 |
| KE6ISX | VANE, DAVID G | 2014-06-30 |
| KE6MPU | TRAN, KIEN A | 2014-09-24 |
| KE6MRA | NICHOLSON, GERALD J | 2014-07-24 |
| KE6MWH | VANE, CAROLYN A | 2014-08-05 |
| KE6QOZ | BARIA, PETE | 2004-11-03 |
| KE6STD | MC CUTCHEON, DAVID L | 2005-04-12 |
| KE6SYT | SHAYLER, ROBERT K | 2015-01-20 |
| KE6WPE | RUTHERGLEN, CHRIS M | 2016-01-30 |
| KE6YUG | KILMARTIN v, EDWARD J | 2016-08-12 |
| KE6ZZA | THOMAS, LARRY G | 2015-10-26 |
| KE6ZZW | HUIE, TIMOTHY Y | 2015-11-03 |
| KF6AFE | LEE, ERIC D | 2016-10-13 |
| KF6BJH | WOODS, GENEVIEVE D | 2016-01-06 |
| KF6BLH | SCOGGINS, BILL R | 2016-02-18 |
| KF6FOY | PASTORINO, JOSEPHINE | 2016-06-24 |
| KF6GTV | KILMARTIN, DAVID P | 2008-01-29 |
| KF6LSS | SEITZ, RONALD R | 2017-04-05 |
| KF6NEA | FLUSCHE, LYNNETTE D | 2017-06-29 |
| KG6AEE | Hill, Carl D | 2019-12-11 |
| KG6BHD | Breus, Dimitry E | 2020-04-02 |
| KG6HYS | ISHIDA, CRAIG W | 2021-08-04 |
| KG6IMM | Iwata, Masanari | 2021-09-16 |
| KG6MDR | Jellison, Charles A | 2012-05-10 |
| KG6MVY | Brazil, Michael W | 2012-06-13 |
| KG6NHN | STASTNY, JOSEF | 2009-03-06 |
| KG6OVN | MITCHELL, ROBERT R | 2012-12-03 |
| KG6PMT | Anderson, David D | 2023-01-04 |
| KG6QLK | MC PARTLAND, JOHN L | 2014-01-11 |
| KG6RYF | Harnmuanphongs, Jonsiri | 2013-05-07 |
| KG6SZX | Boyd, James R | 2013-08-15 |
| KG6UQV | LANE, CHARLES M | 2004-04-07 |
| KG6UVO | Myers, Matthew D | 2014-03-13 |
| KG6UWO | HAMILTON, ROBERT C | 2014-02-12 |
| KG6UWT | HIRST, WILLIAM A | 2004-04-30 |
| KG6WFY | Tretheway, Thomas H | 2014-06-18 |
| KG6ZDR | Prokes, Joseph J | 2015-02-26 |
| KI6BEK | Rosenbury, Erwin T | 2005-10-19 |
| KI6CBR | Hancock, Mark J | 2016-02-02 |
| KI6CFA | Beeler, Donald B | 2016-01-20 |
| KI6CLG | Zima, Susan | 2006-02-13 |
| KI6COX | Martin, Charles H | 2006-02-21 |
| KI6DHW | Schwartz, Randall L | 2016-08-03 |
| KI6DRI | INGRAM, GARETH A | 2006-05-01 |
| KI6DSV | YIN, BURTON P | 2006-05-01 |
| KI6FQX | Payne, Denver J | 2006-09-28 |
| KI6KZU | Margalit, Yotam | 2017-04-25 |
| KI6OKN | Cherniss, William T | 2008-02-07 |
| KI6OXF | Sheets, George E | 2018-02-06 |
| KI6QQT | CHAPARRO, PETE | 2018-04-11 |
| KI6TCC | SILVERBERG, PORCIA C | 2008-09-11 |
| KI6VQH | BULLERWELL, SCOTT R | 2018-11-15 |
| KI6WMS | Schmidt, Rolf | 2018-12-13 |
| KI6YVX | Franklin, Sean Q | 2019-04-19 |
| KJ4PSQ | Titoo, MD | 2021-07-09 |
| KJ6FC | FARQUHAR, VERNON E | 2007-09-07 |
| KJ6FFV | Schatmeier, Neal | 2020-01-07 |
| KJ6HFH | Smith, Norma L | 2010-04-20 |
| KJ6IYB | Clarke, Kenneth L | 2020-06-09 |
| KJ6IYC | Clarke, Kathryn J | 2020-03-26 |
| KJ6JNO | Neuweiler, Rolf W | 2020-07-02 |
| KJ6KSZ | Ma, Alvin | 2010-10-08 |
| KJ6LRT | ALOKOZAI, ARIA | 2010-12-07 |
| KJ6LRU | BANNISTER, PHILLIP | 2010-12-07 |
| KJ6LRV | BARNHART, SOPHIA J | 2010-12-07 |
| KJ6LRW | CASTILLO, MICHAEL D | 2010-12-07 |
| KJ6LRX | CHEN, VANIA | 2010-12-07 |
| KJ6LRY | CHOI, SANG EUN | 2010-12-07 |
