District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4FMI | 9 | 51 | 2023-06-22 | 2025-06-23 | Available |
| K4FMJ | 9 | 61 | 2031-09-09 | — | Active (Vanity) |
| K4FMK | 8 | 57 | 2027-03-20 | — | Active (Vanity) |
| K4FML | 8 | 57 | 2035-10-02 | — | Active (Vanity) |
| K4FMM | 7 | 55 | 2028-04-10 | — | Active (Vanity) |
| K4FMN | 9 | 53 | — | — | Available |
| K4FMO | 8 | 59 | 2034-05-17 | — | Active |
| K4FMP | 8 | 59 | — | — | Available |
| K4FMQ | 8 | 61 | — | — | Available |
| K4FMR | 9 | 55 | 2007-12-02 | 2009-12-03 | Available |
| K4FMS | 9 | 53 | 2032-03-29 | — | Active (Vanity) |
| K4FMT | 8 | 51 | — | — | Available |
| K4FMU | 9 | 55 | 2015-03-01 | 2017-03-02 | Available |
| K4FMV | 8 | 57 | — | — | Available |
| K4FMW | 8 | 57 | 2035-03-15 | — | Active |
| K4FMX | 8 | 59 | 2034-10-20 | — | Active |
| K4FMY | 8 | 61 | 2007-03-21 | 2009-03-22 | Available |
| K4FMZ | 8 | 59 | 2016-03-11 | 2018-03-12 | Available |
| K4FNA | 10 | 51 | 2021-01-17 | 2023-01-18 | Available |
| K4FNB | 10 | 55 | — | — | Available |
| K4FNC | 10 | 57 | 2031-05-17 | — | Active (Vanity) |
| K4FND | 10 | 53 | 2026-04-21 | — | Active (Vanity) |
| K4FNE | 10 | 47 | 2023-09-09 | 2025-09-10 | Available |
| K4FNF | 10 | 55 | 2016-11-19 | 2018-11-20 | Available |
| K4FNG | 9 | 55 | 2035-11-22 | — | Active (Vanity) |
| K4FNH | 10 | 53 | — | — | Available |
| K4FNI | 11 | 49 | 2034-01-07 | — | Active (Vanity) |
| K4FNJ | 11 | 59 | 2028-09-29 | — | Active |
| K4FNK | 10 | 55 | 2025-06-03 | — | Active (Vanity) |
| K4FNL | 10 | 55 | 2015-12-08 | 2017-12-09 | Available |
| K4FNM | 9 | 53 | — | — | Available |
| K4FNN | 11 | 51 | 2008-02-20 | 2010-02-21 | Available |
| K4FNO | 10 | 57 | 2028-10-16 | — | Active (Vanity) |
| K4FNP | 10 | 57 | 2027-06-17 | — | Active (Vanity) |
| K4FNQ | 10 | 59 | — | — | Available |
| K4FNR | 11 | 53 | — | — | Available |
| K4FNS | 11 | 51 | 2024-09-16 | 2026-09-17 | Available |
| K4FNT | 10 | 49 | 2024-09-22 | 2026-09-23 | Available |
| K4FNU | 11 | 53 | 2024-09-03 | 2026-09-04 | Available |
| K4FNV | 10 | 55 | 2027-12-23 | — | Active |
| K4FNW | 10 | 55 | 2015-10-25 | 2017-10-26 | Available |
| K4FNX | 10 | 57 | 2034-05-03 | — | Active |
| K4FNY | 10 | 59 | 2034-03-29 | — | Active |
| K4FNZ | 10 | 57 | 2004-04-05 | 2006-04-06 | Available |
| K4FOA | 9 | 57 | 2006-09-26 | 2008-09-27 | Available |
| K4FOB | 9 | 61 | 2014-06-17 | 2016-06-18 | Available |
| K4FOC | 9 | 63 | 2036-03-14 | — | Active (Vanity) |
| K4FOD | 9 | 59 | — | — | Available |
| K4FOE | 9 | 53 | — | — | Available |
| K4FOF | 9 | 61 | — | — | Available |
| K4FOG | 8 | 61 | 2036-10-18 | — | Active (Vanity) |
| K4FOH | 9 | 59 | — | — | Available |
| K4FOI | 10 | 55 | 2004-07-14 | 2006-07-15 | Available |
| K4FOJ | 10 | 65 | 2033-09-01 | — | Active (Vanity) |
| K4FOK | 9 | 61 | — | — | Available |
| K4FOL | 9 | 61 | 2015-02-01 | 2017-02-02 | Available |
| K4FOM | 8 | 59 | 2031-10-13 | — | Active (Vanity) |
| K4FON | 10 | 57 | 2021-09-20 | 2023-09-21 | Available |
| K4FOO | 9 | 63 | 2031-11-19 | — | Active (Vanity) |
| K4FOP | 9 | 63 | 2027-08-27 | — | Active |
| K4FOQ | 9 | 65 | — | — | Available |
| K4FOR | 10 | 59 | 2036-08-01 | — | Active |
| K4FOS | 10 | 57 | — | — | Available |
| K4FOT | 9 | 55 | — | — | Available |
| K4FOU | 10 | 59 | — | — | Available |
| K4FOV | 9 | 61 | — | — | Available |
| K4FOW | 9 | 61 | 2027-02-13 | — | Active (Vanity) |
| K4FOX | 9 | 63 | 2027-12-19 | — | Active (Vanity) |
| K4FOY | 9 | 65 | 2034-03-22 | — | Active |
| K4FOZ | 9 | 63 | 2024-10-19 | 2026-10-20 | Available |
| K4FPA | 9 | 57 | — | — | Available |
| K4FPB | 9 | 61 | — | — | Available |
| K4FPC | 9 | 63 | 2006-05-29 | 2008-05-30 | Available |
| K4FPD | 9 | 59 | — | — | Available |
| K4FPE | 9 | 53 | 2018-02-27 | 2020-02-28 | Available |
| K4FPF | 9 | 61 | 2026-07-12 | — | Active (Vanity) |
| K4FPG | 8 | 61 | 2033-02-16 | — | Active |
| K4FPH | 9 | 59 | 2028-02-26 | — | Active |
| K4FPI | 10 | 55 | — | — | Available |
| K4FPJ | 10 | 65 | 2033-10-07 | — | Active (Vanity) |
| K4FPK | 9 | 61 | 2034-06-03 | — | Active (Vanity) |
| K4FPL | 9 | 61 | 2028-12-03 | — | Active |
| K4FPM | 8 | 59 | 2034-01-14 | — | Active (Vanity) |
| K4FPN | 10 | 57 | — | — | Available |
| K4FPO | 9 | 63 | 2015-04-20 | 2017-04-21 | Available |
| K4FPP | 9 | 63 | 2030-10-19 | — | Active (Vanity) |
| K4FPQ | 9 | 65 | — | — | Available |
| K4FPR | 10 | 59 | — | — | Available |
| K4FPS | 10 | 57 | 2025-08-30 | — | Active |
| K4FPT | 9 | 55 | 2035-09-12 | — | Active (Vanity) |
| K4FPU | 10 | 59 | — | — | Available |
| K4FPV | 9 | 61 | 2029-06-04 | — | Active (Vanity) |
| K4FPW | 9 | 61 | 2024-05-17 | 2026-05-18 | Available |
| K4FPX | 9 | 63 | — | — | Available |
| K4FPY | 9 | 65 | 2006-02-16 | 2008-02-17 | Available |
| K4FPZ | 9 | 63 | 2027-06-14 | — | Active (Vanity) |
| K4FQA | 9 | 59 | — | — | Available |
| K4FQB | 9 | 63 | 2022-02-11 | 2024-02-12 | Available |
| K4FQC | 9 | 65 | 2036-01-17 | — | Active |
| K4FQD | 9 | 61 | — | — | Available |