The Federal Communications Commission (FCC) has granted a total of 178 licenses and call signs in the category of Amateur license in Walnut, 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 |
|---|---|---|
| KJ6YYF | Wong, Brandon R | 2012-07-26 |
| KJ6YYG | Wong, Marissa J | 2012-07-26 |
| KJ6YYH | Wong, Adrianne G | 2012-07-26 |
| KJ6ZPG | Kane, Gus | 2012-09-11 |
| KK4FVH | Hotchkiss, Kyle M | 2021-10-21 |
| KK6ALB | Phan, David C | 2022-08-17 |
| KK6DWU | Motus, Karen M | 2013-04-29 |
| KK6FYS | Liu, Yu | 2013-08-01 |
| KK6GDW | Mikaelian, Jeffrey T | 2013-08-14 |
| KK6GKQ | Lin, Han W | 2013-09-04 |
| KK6HJT | Avila, Raul A | 2013-10-28 |
| KK6JHR | KELLER, ALLAN W | 2014-02-03 |
| | ||
| KK6LAI | Mason, Martin S | 2014-04-04 |
| KK6MUW | Cantino, Andrew S | 2014-05-30 |
| KK6OJT | Shupe, David J | 2014-08-08 |
| KK6OKA | Han, Young J | 2014-08-12 |
| KK6RIH | Lim, Blaze Bentley C | 2015-01-16 |
| KK6RLU | Lee, Thomas E | 2015-01-23 |
| KK6TIV | Chu, Benjamin | 2015-04-20 |
| KK6TTQ | Uribe II, Silvestre | 2015-04-30 |
| KK6UPC | Penafiel, Ricardo M | 2015-06-04 |
| KK6VJF | CHIU, PAUL C | 2015-07-20 |
| KK6VXV | Noordhuis, Pieter | 2015-08-19 |
| KK6WNK | Werner, Thomas D | 2015-10-01 |
| KK6YIE | Bond, Christopher Daniel | 2013-11-26 |
| KK6YVY | Mayeda, Lester M | 2015-11-23 |
| KK6YVZ | Marostica, Daniel A | 2015-11-23 |
| KM6AFG | Valdes, Edgar G | 2016-02-03 |
| KM6BBG | Lee, Gary F | 2016-03-11 |
| KM6BCG | Tian, Kai | 2016-03-11 |
| KM6DBF | Vysosias, Vicente P | 2016-05-26 |
| KM6EIG | Alvarado, Raul | 2016-07-28 |
| KM6EML | Tam, Tony P | 2016-08-05 |
| KM6EXU | Villagrana, Dylan-Diego | 2016-08-26 |
| KM6EXV | Villagrana, Gilbert | 2016-08-26 |
| KM6GGB | Bertulfo, Alfred | 2016-11-04 |
| KM6HOO | Alvarado, Jose G | 2017-01-23 |
| KM6IJQ | Folkmanis, Girts | 2017-02-21 |
| KM6IPE | LANTANG, DEBORAH | 2017-02-24 |
| KM6IPF | LANTANG, LEONARD | 2017-02-24 |
| KM6KUO | ACS AMATEUR RADIO CLUB | 2017-06-01 |
| KM6LNX | ENGLISH, MARK R | 2017-07-12 |
| KM6LNY | KWEE, HENRY | 2017-07-12 |
| KM6LXZ | Salsman, Jacqueline K | 2017-07-25 |
| KM6MDX | Gilfillen, Brenda K | 2017-08-14 |
| KM6MME | Pascual, Marvin T | 2017-08-31 |
| KM6NYT | Duggirala, Venkata Surya K | 2017-11-07 |
| KM6OAQ | Tan, Christopher W | 2017-11-07 |
| KM6QAT | Jacobson, Matthew F | 2018-02-05 |
| KM6QNK | Li, Dustin | 2018-02-20 |
| KM6TCQ | Manuel, Francis J | 2018-05-16 |
| KM6URN | MacAdam, Joshua | 2018-07-20 |
| KM6VAE | Huang, Ying C | 2018-08-01 |
| KM6VOB | Suwanaloet, Sant | 2018-09-05 |
| KM6WJC | Shieh, Jeffrey | 2018-10-19 |
| KM6YBO | Jovellanos, Joseph Bernard G | 2018-11-26 |
| KM6YKI | Ying, Eric J | 2018-12-04 |
| KM6ZIO | Suwanaloet, Sean M | 2019-01-31 |
| KN6EFW | Davis, Michael | 2019-09-10 |
| KN6EGL | Ti, Meng | 2019-09-10 |
| KN6EGP | Zhu, Brian | 2019-09-11 |
| KN6LHY | Aguilar, Andrew | 2020-10-13 |
| KN6PRF | Reyes, Richard A | 2021-07-19 |
| KN6PWY | SUZUKI, RORY | 2021-08-03 |
| KN6QIH | Shamlin, Matthew E | 2021-09-03 |
| KN6UFD | Chun, Kee Taik | 2022-05-18 |
| KN6VBB | Brion, Alger L | 2022-07-08 |
| KN6VJS | Rogus, Robert J | 2022-08-10 |
| KN6WOL | Phan, Abel S | 2022-11-18 |
| KN6YXG | Cheung, Jerry | 2023-03-13 |
| KW6K | Goyer, Warren R | 2016-12-02 |
| N6BBC | CALIENDO, MICHAEL F | 2015-11-10 |
| N6WOI | SONG, JAE SEUNG | 2013-04-23 |
| NO6B | DENGLER, ROBERT J | 2017-07-27 |
| WA6APR | CARTER, LAWRENCE A | 2008-03-05 |
| WA6ATI | VIERECK, DENNIS W | 2018-01-04 |
| WA6HHA | OLDHAM, STAN P | 2014-12-11 |
| WA6IZK | SARETSKY, RICHARD D | 2015-02-26 |
