The Federal Communications Commission (FCC) has granted a total of 46 licenses and call signs in the category of Amateur license in Cool, 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 |
|---|---|---|
| KA6UYA | HODGE, VICTOR E | 2015-10-26 |
| KC6OPX | Low, Thomas G | 2013-07-23 |
| KD7IRZ | LEVY, KEITH A | 2010-01-26 |
| KE6FBF | MARCOM, GERON D | 2013-12-12 |
| KE6FYY | DALLAM, PATRICIA M | 2014-07-02 |
| KE6OBN | LAAS, KATHRYN L | 2004-11-10 |
| KE6PXU | DUFLON, RAYMOND H | 2018-07-11 |
| KE6ROO | HALL, DEAN E | 2005-02-22 |
| KG6AJM | SYLVIA, BRENDA S | 2009-12-11 |
| KG6EFX | Thornton, Denise K | 2010-10-29 |
| KG6FHY | BAILEY, Rho S | 2021-01-04 |
| KG6LRY | Edmondson, Sheila K | 2022-10-15 |
| KG6UIG | Kramer, Debra L | 2014-01-02 |
| KG6YVM | Patenaude, Paul | 2005-03-24 |
| KI6JKX | PURMORT HALPIN, JOYCE | 2017-02-16 |
| KI6JKZ | HALPIN, DAVID B | 2017-02-16 |
| KI6VJU | FRENCH, JASON M | 2009-01-28 |
| KI6VJW | FRENCH JR, JOHN C | 2009-01-28 |
| KJ6MOT | Andrus, Richard B | 2021-06-17 |
| KJ6SQO | Prior, Peggy M | 2011-11-10 |
| KJ6UBO | Martin, Tami L | 2022-10-18 |
| KJ6UNK | Gilbert, Greg P | 2023-02-02 |
| KK6AUC | Nattrass, Adam J | 2012-11-07 |
| KK6QZP | Stuart, Guy M | 2014-12-18 |
| KK6THI | Maduri, Gail | 2015-04-15 |
| KK6UIL | Call, Jeremy W | 2015-05-26 |
| KM6AZL | Ridgley, Renee S | 2016-03-10 |
| KM6AZO | Staudinger, Richard J | 2016-03-10 |
| KM6AZP | Cornforth, E Janell | 2016-03-10 |
| KM6AZQ | Bickner, Paul C | 2016-03-10 |
| KM6CYU | Chorich, Martin M | 2016-05-23 |
| KM6KRI | Lemoine, David J | 2017-05-26 |
| KM6LYW | LAMPARTER, RICHARD C | 2017-07-27 |
| KM6RGL | Amos, Stanley J | 2018-03-09 |
| KM6RNP | Falcone, Mark | 2018-03-21 |
| KM6RUB | SAINT, ANDREW | 2018-04-03 |
| KM6YNU | Veerkamp, Marie A | 2018-12-12 |
| KM6YNZ | Turney, Kelly A | 2018-12-12 |
| KN6AYH | Kaplan, Susan D | 2019-04-04 |
| KN6AYI | Kaplan, David W | 2019-04-04 |
| KN6JYI | LAMPARTER, JODI A | 2020-07-21 |
| KN6KEC | Kleames, Michael | 2020-08-04 |
| KN6PKU | Carpenter, Wesley | 2021-06-28 |
| KN6TSE | Bout, Danjel | 2022-04-11 |
| N6TZU | MEANS, RONALD H | 2021-01-26 |
| WD6GHR | SHULTZ, ETTA S | 2014-02-20 |
