District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4KFK | 9 | 59 | 2033-03-13 | — | Active (Vanity) |
| K4KFL | 9 | 59 | 2031-07-23 | — | Active (Vanity) |
| K4KFM | 8 | 57 | 2031-09-03 | — | Active |
| K4KFN | 10 | 55 | 2033-11-22 | — | Active (Vanity) |
| K4KFO | 9 | 61 | 2028-11-30 | — | Active (Vanity) |
| K4KFP | 9 | 61 | 2035-01-03 | — | Active (Vanity) |
| K4KFQ | 9 | 63 | 2034-08-29 | — | Active |
| K4KFR | 10 | 57 | 2033-07-30 | — | Active (Vanity) |
| K4KFS | 10 | 55 | — | — | Available |
| K4KFT | 9 | 53 | 2020-10-20 | 2022-10-21 | Available |
| K4KFU | 10 | 57 | — | — | Available |
| K4KFV | 9 | 59 | — | — | Available |
| K4KFW | 9 | 59 | 2031-04-27 | — | Active (Vanity) |
| K4KFX | 9 | 61 | 2017-08-07 | 2019-08-08 | Available |
| K4KFY | 9 | 63 | — | — | Available |
| K4KFZ | 9 | 61 | 2028-01-13 | — | Active |
| K4KGA | 8 | 55 | 2019-07-07 | 2021-07-08 | Available |
| K4KGB | 8 | 59 | 2030-09-25 | — | Active (Vanity) |
| K4KGC | 8 | 61 | 2031-05-14 | — | Active (Vanity) |
| K4KGD | 8 | 57 | 2006-04-10 | 2008-04-11 | Available |
| K4KGE | 8 | 51 | — | — | Available |
| K4KGF | 8 | 59 | 2020-07-24 | 2022-07-25 | Available |
| K4KGG | 7 | 59 | 2029-05-29 | — | Active (Vanity) |
| K4KGH | 8 | 57 | — | — | Available |
| K4KGI | 9 | 53 | — | — | Available |
| K4KGJ | 9 | 63 | 2016-05-06 | 2018-05-07 | Available |
| K4KGK | 8 | 59 | 2010-12-07 | 2012-12-08 | Available |
| K4KGL | 8 | 59 | 2027-09-29 | — | Active (Vanity) |
| K4KGM | 7 | 57 | 2027-03-24 | — | Active (Vanity) |
| K4KGN | 9 | 55 | — | — | Available |
| K4KGO | 8 | 61 | 2006-06-19 | 2008-06-20 | Available |
| K4KGP | 8 | 61 | 2030-08-25 | — | Active (Vanity) |
| K4KGQ | 8 | 63 | — | — | Available |
| K4KGR | 9 | 57 | 2030-11-28 | — | Active (Vanity) |
| K4KGS | 9 | 55 | 2017-02-25 | 2019-02-26 | Available |
| K4KGT | 8 | 53 | 2027-05-30 | — | Active (Vanity) |
| K4KGU | 9 | 57 | 2008-02-25 | 2010-02-26 | Available |
| K4KGV | 8 | 59 | — | — | Available |
| K4KGW | 8 | 59 | 2023-09-07 | 2025-09-08 | Available |
| K4KGX | 8 | 61 | 2036-07-24 | — | Active (Vanity) |
| K4KGY | 8 | 63 | — | — | Available |
| K4KGZ | 8 | 61 | 2025-07-13 | — | Active |
| K4KHA | 9 | 53 | 1999-09-26 | 2001-09-27 | Available |
| K4KHB | 9 | 57 | 2026-12-17 | — | Active |
| K4KHC | 9 | 59 | 2026-12-20 | — | Active (Vanity) |
| K4KHD | 9 | 55 | — | — | Available |
| K4KHE | 9 | 49 | 2033-11-14 | — | Active (Vanity) |
| K4KHF | 9 | 57 | 2024-11-19 | 2026-11-20 | Canceled (grace period) |
| K4KHG | 8 | 57 | — | — | Available |
| K4KHH | 9 | 55 | 2035-12-09 | — | Active (Vanity) |
| K4KHI | 10 | 51 | 2028-03-06 | — | Active (Vanity) |
| K4KHJ | 10 | 61 | — | — | Available |
| K4KHK | 9 | 57 | — | — | Available |
| K4KHL | 9 | 57 | — | — | Available |
| K4KHM | 8 | 55 | 2020-12-08 | 2022-12-09 | Available |
| K4KHN | 10 | 53 | 2028-04-07 | — | Active (Vanity) |
| K4KHO | 9 | 59 | 2031-10-08 | — | Active (Vanity) |
| K4KHP | 9 | 59 | — | — | Available |
| K4KHQ | 9 | 61 | — | — | Available |
| K4KHR | 10 | 55 | 2031-04-02 | — | Active (Vanity) |
| K4KHS | 10 | 53 | 2034-04-16 | — | Active (Vanity) |
| K4KHT | 9 | 51 | 2012-08-17 | 2014-08-18 | Available |
| K4KHU | 10 | 55 | — | — | Available |
| K4KHV | 9 | 57 | 2027-02-20 | — | Active |
| K4KHW | 9 | 57 | 1997-10-06 | 1999-10-07 | Available |
| K4KHX | 9 | 59 | — | — | Available |
| K4KHY | 9 | 61 | — | — | Available |
| K4KHZ | 9 | 59 | 2034-08-16 | — | Active (Vanity) |
| K4KIA | 10 | 49 | 2027-12-18 | — | Active |
| K4KIB | 10 | 53 | 2027-02-04 | — | Active (Vanity) |
| K4KIC | 10 | 55 | 2016-09-24 | 2018-09-25 | Available |
| K4KID | 10 | 51 | 2029-03-03 | — | Active (Vanity) |
| K4KIE | 10 | 45 | 2008-04-03 | 2010-04-04 | Available |
| K4KIF | 10 | 53 | 2016-12-13 | 2018-12-14 | Available |
| K4KIG | 9 | 53 | — | — | Available |
| K4KIH | 10 | 51 | 2025-08-21 | — | Active |
| K4KII | 11 | 47 | 2029-08-10 | — | Active (Vanity) |
| K4KIJ | 11 | 57 | — | — | Available |
| K4KIK | 10 | 53 | 2024-04-12 | 2026-04-13 | Available |
| K4KIL | 10 | 53 | 2026-09-16 | — | Active (Vanity) |
| K4KIM | 9 | 51 | 2030-11-28 | — | Active (Vanity) |
| K4KIN | 11 | 49 | 2030-12-29 | — | Active (Vanity) |
| K4KIO | 10 | 55 | 2030-04-28 | — | Active (Vanity) |
| K4KIP | 10 | 55 | 2035-05-30 | — | Active (Vanity) |
| K4KIQ | 10 | 57 | — | — | Available |
| K4KIR | 11 | 51 | 2036-08-30 | — | Active (Vanity) |
| K4KIS | 11 | 49 | 2034-03-25 | — | Active (Vanity) |
| K4KIT | 10 | 47 | 2033-07-14 | — | Active (Vanity) |
| K4KIU | 11 | 51 | 2031-10-29 | — | Active |
| K4KIV | 10 | 53 | 2030-03-13 | — | Active |
| K4KIW | 10 | 53 | — | — | Available |
| K4KIX | 10 | 55 | 2024-06-22 | 2026-06-23 | Available |
| K4KIY | 10 | 57 | 2024-03-22 | 2026-03-23 | Available |
| K4KIZ | 10 | 55 | 2029-04-26 | — | Active (Vanity) |
| K4KJA | 10 | 59 | 2030-11-20 | — | Active (Vanity) |
| K4KJB | 10 | 63 | 2027-10-27 | — | Active (Vanity) |
| K4KJC | 10 | 65 | 2031-05-15 | — | Active (Vanity) |
| K4KJD | 10 | 61 | 2030-08-29 | — | Active (Vanity) |
| K4KJE | 10 | 55 | — | — | Available |
| K4KJF | 10 | 63 | 2021-05-25 | 2023-05-26 | Available |