The Federal Communications Commission (FCC) has granted a total of 212 licenses and call signs in the category of Amateur license in Altadena, 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 |
|---|---|---|
| AA7R | GAUTIER III, THOMAS N | 2018-01-29 |
| AC6VW | DROWNS, KEVIN E | 2014-11-14 |
| AD6YN | SARREL, MARC A | 2021-08-10 |
| AG6YR | Collins, Steven M | 2014-02-04 |
| AI6LT | Lindholm, Stephen B | 2015-10-19 |
| K0TYY | BACKES, RAYMOND C | 2005-03-16 |
| K0VHR | PEARSON BROUHARD, CELINDA | 2014-09-15 |
| K6RKN | NEWCOMB, MANUS T | 2016-02-03 |
| KB3UUS | Miller, Joshua M | 2020-06-23 |
| KB6AXN | BARNES, MYRON H | 2018-05-10 |
| KB6KZQ | TROUT, ROBERT G | 2006-08-08 |
| KB6OOC | WALSH, GERALD J | 2016-12-28 |
| | ||
| KB6SRO | Powell, Thomas M | 2007-01-09 |
| KB6TUG | CARPENTER, ADRIA L | 2018-06-20 |
| KB6UQV | HOWARD, ANDREW A | 2014-03-06 |
| KC1EMU | Lagoy, Dustin M | 2015-10-02 |
| KC6BBE | Sanchez, Maria R | 2019-10-28 |
| KC6BEU | Sanchez, Miguel M | 2013-03-27 |
| KC6JYB | HORN, JOHN M | 2013-07-11 |
| KC6PSR | CARPENTER, BARBARA R | 2010-12-08 |
| KC6YIH | PRIESONT, TERRY A | 2021-04-13 |
| KC6YNK | JOHNSON, CHARLINA E | 2021-04-22 |
| KC6ZIP | MEYER, MARIE L | 2011-09-07 |
| KD6ACM | BUTLER, WILLIAM H | 2011-07-06 |
| KD6ACN | BUTLER, ELAINE J | 2011-07-06 |
| KD6BBU | COLLINS-MOORE, FRANCES C | 2011-07-08 |
| KD6COI | DWINELL, A MICHELE | 2013-10-24 |
| KD6LVT | WARD, GARY V | 2022-07-16 |
| KD6NBS | VALLEJO, ANTHONY D | 2014-07-01 |
| KD6PHG | RODRIGUEZ, RAMON | 2012-09-04 |
| KD6PHH | RODRIGUEZ, JOSEPHINE | 2012-09-05 |
| KD6PZV | WESLEY JR, LEON H | 2012-09-24 |
| KD6QOU | HORN, SUE | 2012-10-24 |
| KD7GZF | Goodwell, Richard C | 2009-08-21 |
| KE6ABQ | CARSON, CHRISTOPHER L | 2013-08-23 |
| KE6EOL | CUDE, LARRY R | 2013-10-22 |
| KE6FE | AUMANN, HARTMUT H | 2007-01-16 |
| KE6ICG | LEWIS JR, JAMES M | 2004-03-25 |
| KE6JDY | JONES, REVERE S | 2014-07-30 |
| KE6OOF | STEIN, DANIEL A | 2015-01-12 |
| KE6OWY | Akins, Kellee M | 2004-12-01 |
| KE6PKH | SHELTON, BRIAN M | 2015-07-16 |
| KE6PNC | Barnes-roberts, Donna L | 2014-09-26 |
| KE6RFW | PAIGE, DAN C | 2015-02-10 |
| KE6UJZ | KARIKITAN, RAFAELA O | 2016-06-09 |
| KE6VZK | Harlow, Daniel E | 2015-06-03 |
| KE6WRW | KERRIGAN, KEVIN | 2005-05-16 |
| KE6YTW | GROKETT, LAUREN M | 2005-08-31 |
| KF6AQK | ROBERTS, KRIS A | 2016-10-04 |
| KF6CGC | SCHWIEN, GREG J | 2005-12-21 |
| KF6FEM | DINKO, MICHAEL B | 2016-04-29 |
| KF6HMA | BAUGHMAN, JAMES A | 2016-10-14 |
| KF6ISK | BROUSSARD, JERRY L | 2016-11-08 |
| KF6ISM | CLIPPER, PRESTON G | 2017-01-17 |
| KF6LRH | SECILIA, TONY M | 2017-06-14 |
| KF6LTC | BROZEK, ELIZABETH W | 2007-06-20 |
| KF6OWI | TULLY, JOHN C | 2019-02-05 |
| KF6OYY | JOHNSON, LEE K | 2017-11-15 |
| KF6PSS | Stiver, Robert A | 2018-03-06 |
| KF6QBZ | CAMPBELL, JAMES D | 2007-12-20 |
| KF6RJY | JOHNSON, BRUCE A | 2018-10-18 |
| KF6RQC | SINCLAIR, JOAN M | 2018-04-20 |
| KF6RQD | SINCLAIR, JOHN A | 2018-04-20 |
| KF6RQE | SINCLAIR, JOHN S | 2018-04-20 |
| KF6RSK | BASCOM, BENJAMIN W | 2008-04-01 |
| KF6RSL | BASCOM, ROBERT A | 2008-04-01 |
| KF6TXT | POTTER, BENJAMIN A | 2008-12-02 |
| KF6VGK | TEN BRUMMELAAR, THEO A | 2019-02-12 |
| KF6ZQD | Carter, Darryl L | 2019-10-25 |
| KF6ZQG | Cruise, Sallie L | 2009-11-13 |
| KG6ELH | VASQUEZ, RAMON | 2020-10-09 |
| KG6JUS | Vasquez, Corrina R | 2012-01-06 |
| KG6JUV | Riggs, Ross | 2012-01-31 |
| KG6JVP | Bowns, Gerald T | 2013-06-27 |
| KG6JVQ | Bowns, Barbara | 2013-06-27 |
| KG6NGM | Adams, Bradley W | 2012-10-02 |
| KG6PKM | McAlister, Samuel A | 2013-01-16 |
| KG6PRR | Nelson, Ronald K | 2013-06-27 |
| KG6SGQ | Figueroa, Philip A | 2014-12-10 |
| KG6WNN | Hartman, Frank R | 2014-10-18 |
| KG9GU | Hockney, George M | 2016-03-18 |
| KI6BDJ | Robinson, Travis S | 2015-11-05 |
| KI6DIM | Reagan, Patrick J | 2006-04-11 |
| KI6EZW | Weitekamp, Danny | 2006-08-02 |
| KI6IRH | Thornton, Brandon M | 2007-03-27 |
| KI6JVF | HISPANIC RADIO AMATEUR NETWORK | 2017-03-01 |
| KI6KGE | Campbell, Matthew S | 2007-06-08 |
| KI6LJD | Shafer Jr, Howard W | 2007-08-13 |
| KI6LQO | Wagner, Frederick S | 2017-10-24 |
| KI6MWA | Rogers, William A | 2017-08-28 |
| KI6NKT | Spencer, George V | 2017-12-06 |
| KI6NTN | Steltzner, Adam D | 2008-01-02 |
| KI6XU | CARPENTER, ROLAND J | 2017-04-20 |
| KI6YRB | Pierce, Eric | 2019-04-08 |
| KJ6AFS | Standing, Derek M | 2009-06-17 |
| KJ6BMH | Jackson, Richard B | 2009-08-06 |
| KJ6BMT | Carlson, Benjamin A | 2009-08-06 |
| KJ6BSH | Erganian, Raffi | 2009-08-20 |
| KJ6JIY | Lopez, Christian | 2020-05-11 |
| KJ6KVH | DiMartino, Vincent R | 2020-10-16 |
