The Federal Communications Commission (FCC) has granted a total of 53 licenses and call signs in the category of Amateur license in Keystone Heights, Florida. 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 |
|---|---|---|
| K4DXL | Smith, Jack E | 2014-01-02 |
| KA4AOS | RICHARDS, DONALD S | 2017-09-12 |
| KA4KHK | GREENE, RALPH W | 2006-10-10 |
| KA4ZSR | WOLFE JR, WILLIAM M | 2021-07-06 |
| KB3AKR | OUTTEN, LISBETH A | 2013-11-06 |
| KB4TAY | DOYLE JR, FRANK D | 2018-02-06 |
| KC4OPH | SPONHOLTZ SR, WAYNE D | 2009-12-02 |
| KD0NGL | Mercill, Christopher D | 2020-09-19 |
| KD4AEZ | BREIDENBAUGH, HAROLD C | 2011-02-07 |
| KD4IPQ | MASSEY, JAMES K | 2023-02-28 |
| KD4ZAT | ADLER, KENNETH J | 2013-02-11 |
| KE4HRP | TROUT, JOAN H | 2003-08-26 |
| | ||
| KE4HWR | BUCHANAN, JOHN R | 2004-06-10 |
| KF4EXP | Boone, Virginia A | 2015-08-26 |
| KF4FDD | COPELAND JR, HAROLD L | 2015-10-28 |
| KF4LAI | LEWIS, MICHAEL A | 2006-12-08 |
| KF4LON | THIGPIN, JUDY C | 2016-08-31 |
| KF4NT | WEAVER, RICHARD E | 2008-11-25 |
| KG4KCF | Bradshaw, Albert H | 2011-01-18 |
| KG4RPV | SANDERS, HAROLD W | 2011-11-22 |
| KI4DIJ | Hartman, Ronald L | 2013-11-19 |
| KI4GLL | Holt, Katherine R | 2004-07-27 |
| KI4GPH | Eberhardt, Kayla M | 2004-08-11 |
| KI4YOD | Lee, Chris C | 2007-08-09 |
| KJ4IIF | Robinson, Kenneth H | 2018-09-19 |
| KJ4UYV | Croft Jr, Orson J | 2010-05-14 |
| KK4KZF | Huffman, Jason P | 2012-08-10 |
| KK4PPD | Keystone Field Day Volunteers Club | 2013-03-19 |
| KK4WAW | Paine, Robert H | 2013-12-23 |
| KM4HYF | Hope, Richard N | 2015-02-17 |
| KN4MLS | The American Legion Amateur Radio Club 5th District Florida | 2018-05-21 |
| KN4PPA | Bradley, Jeremy W | 2018-10-16 |
| KN4ZCF | Montaigne, Edward B | 2019-10-16 |
| KO4AOF | Montaigne, Jeanie C | 2019-12-17 |
| KO4KKH | Peek, Jeffrey R | 2020-12-22 |
| KO4KQZ | OLSON, SCOTT P | 2021-01-05 |
| KO4LGM | Cannon, Gary D | 2021-01-22 |
| KO4MRZ | Smoak, Anne E | 2021-02-17 |
| KO4MSA | Smoak, Gregory S | 2021-02-17 |
| KO4OPB | Berger, Kenneth M | 2021-03-22 |
| KO4WLZ | BRISTOW, ANTHONY J | 2022-02-07 |
| KO4WRQ | Bristow, Austin R | 2022-02-14 |
| KS4KP | REHKOPF, JEFFREY J | 2023-04-07 |
| KY4KE | Smith, Dan R | 2020-12-28 |
| N4JEE | JENKINS, EUGENE N | 2018-09-14 |
| N4KE | BLAKE, RONALD E | 2016-02-16 |
| N4WMS | ALSABROOK I, KENNETH D | 2020-09-25 |
| NH7XN | PERRY, EDWYN A | 2015-03-24 |
| W4SAC | THRASHER, WILBERT E | 2019-03-05 |
| WA0PXL | BATES JR, ROBERT E | 2012-02-23 |
| WA6GOQ | KITTS, LARRY A | 2022-04-05 |
| WN4T | CALCOTE, GLENN W | 2017-11-28 |
| WQ4S | Holloway, James W | 2018-10-23 |
