District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4KBO | 9 | 61 | 1997-08-04 | 1999-08-05 | Available |
| K4KBP | 9 | 61 | 2016-03-15 | 2018-03-16 | Available |
| K4KBQ | 9 | 63 | — | — | Available |
| K4KBR | 10 | 57 | 2030-12-30 | — | Active (Vanity) |
| K4KBS | 10 | 55 | 2034-05-07 | — | Active (Vanity) |
| K4KBT | 9 | 53 | 2028-05-30 | — | Active (Vanity) |
| K4KBU | 10 | 57 | 2018-08-20 | 2020-08-21 | Available |
| K4KBV | 9 | 59 | — | — | Available |
| K4KBW | 9 | 59 | 2030-04-03 | — | Active (Vanity) |
| K4KBX | 9 | 61 | 2021-12-31 | 2024-01-01 | Available |
| K4KBY | 9 | 63 | — | — | Available |
| K4KBZ | 9 | 61 | — | — | Available |
| K4KCA | 9 | 57 | 2033-11-28 | — | Active (Vanity) |
| K4KCB | 9 | 61 | 2029-07-26 | — | Active |
| K4KCC | 9 | 63 | 2032-02-11 | — | Active |
| K4KCD | 9 | 59 | 2032-09-27 | — | Active (Vanity) |
| K4KCE | 9 | 53 | 2032-04-15 | — | Active (Vanity) |
| K4KCF | 9 | 61 | 2031-03-27 | — | Active (Vanity) |
| K4KCG | 8 | 61 | 2028-03-24 | — | Active (Vanity) |
| K4KCH | 9 | 59 | 2019-03-20 | 2021-03-21 | Available |
| K4KCI | 10 | 55 | 2016-05-02 | 2018-05-03 | Available |
| K4KCJ | 10 | 65 | 2029-08-04 | — | Active (Vanity) |
| K4KCK | 9 | 61 | 2030-03-26 | — | Active (Vanity) |
| K4KCL | 9 | 61 | 2036-08-20 | — | Active (Vanity) |
| K4KCM | 8 | 59 | 2029-05-04 | — | Active (Vanity) |
| K4KCN | 10 | 57 | — | — | Available |
| K4KCO | 9 | 63 | 2030-03-27 | — | Active (Vanity) |
| K4KCP | 9 | 63 | 2032-07-29 | — | Active (Vanity) |
| K4KCQ | 9 | 65 | 2015-06-29 | 2017-06-30 | Available |
| K4KCR | 10 | 59 | 2032-10-08 | — | Active (Vanity) |
| K4KCS | 10 | 57 | 2032-02-25 | — | Active (Vanity) |
| K4KCT | 9 | 55 | — | — | Available |
| K4KCU | 10 | 59 | 2013-01-23 | 2015-01-24 | Available |
| K4KCV | 9 | 61 | — | — | Available |
| K4KCW | 9 | 61 | 2024-03-01 | 2026-03-02 | Available |
| K4KCX | 9 | 63 | 2033-11-18 | — | Active (Vanity) |
| K4KCY | 9 | 65 | 2029-05-24 | — | Active (Vanity) |
| K4KCZ | 9 | 63 | 2032-03-08 | — | Active |
| K4KDA | 9 | 53 | 2030-09-11 | — | Active (Vanity) |
| K4KDB | 9 | 57 | 2031-03-16 | — | Active (Vanity) |
| K4KDC | 9 | 59 | 2034-03-31 | — | Active (Vanity) |
| K4KDD | 9 | 55 | 2032-05-19 | — | Active (Vanity) |
| K4KDE | 9 | 49 | 2028-11-14 | — | Active (Vanity) |
| K4KDF | 9 | 57 | 2034-12-31 | — | Active (Vanity) |
| K4KDG | 8 | 57 | 2027-08-18 | — | Active |
| K4KDH | 9 | 55 | 2035-08-17 | — | Active |
| K4KDI | 10 | 51 | 2035-02-01 | — | Active (Vanity) |
| K4KDJ | 10 | 61 | 2028-03-05 | — | Active |
| K4KDK | 9 | 57 | 2032-11-30 | — | Active |
| K4KDL | 9 | 57 | — | — | Available |
| K4KDM | 8 | 55 | 2030-05-02 | — | Active (Vanity) |
| K4KDN | 10 | 53 | 2022-02-25 | 2024-02-26 | Available |
| K4KDO | 9 | 59 | — | — | Available |
| K4KDP | 9 | 59 | 2036-09-06 | — | Active (Vanity) |
| K4KDQ | 9 | 61 | — | — | Available |
| K4KDR | 10 | 55 | 2035-06-13 | — | Active (Vanity) |
| K4KDS | 10 | 53 | 2036-07-06 | — | Active (Vanity) |
| K4KDT | 9 | 51 | 2024-03-05 | 2026-03-06 | Available |
| K4KDU | 10 | 55 | — | — | Available |
| K4KDV | 9 | 57 | — | — | Available |
| K4KDW | 9 | 57 | 2035-03-07 | — | Active (Vanity) |
| K4KDX | 9 | 59 | 2036-02-26 | — | Active (Vanity) |
| K4KDY | 9 | 61 | 2031-04-16 | — | Active (Vanity) |
| K4KDZ | 9 | 59 | 2030-01-07 | — | Active (Vanity) |
| K4KEA | 9 | 47 | 2029-04-09 | — | Active (Vanity) |
| K4KEB | 9 | 51 | 2031-12-28 | — | Active (Vanity) |
| K4KEC | 9 | 53 | 2031-10-27 | — | Active (Vanity) |
| K4KED | 9 | 49 | 2036-04-11 | — | Active (Vanity) |
| K4KEE | 9 | 43 | 2029-03-17 | — | Active (Vanity) |
| K4KEF | 9 | 51 | 2030-07-03 | — | Active (Vanity) |
| K4KEG | 8 | 51 | 2034-11-26 | — | Active (Vanity) |
| K4KEH | 9 | 49 | — | — | Available |
| K4KEI | 10 | 45 | 2033-12-14 | — | Active |
| K4KEJ | 10 | 55 | 2026-04-18 | — | Active |
| K4KEK | 9 | 51 | 2032-04-19 | — | Active (Vanity) |
| K4KEL | 9 | 51 | 2030-02-01 | — | Active (Vanity) |
| K4KEM | 8 | 49 | 2030-11-17 | — | Active (Vanity) |
| K4KEN | 10 | 47 | 2027-04-14 | — | Active (Vanity) |
| K4KEO | 9 | 53 | 2032-06-28 | — | Active (Vanity) |
| K4KEP | 9 | 53 | 2030-06-16 | — | Active (Vanity) |
| K4KEQ | 9 | 55 | 2028-03-21 | — | Active |
| K4KER | 10 | 49 | 2004-09-14 | 2006-09-15 | Available |
| K4KES | 10 | 47 | 2024-06-05 | 2026-06-06 | Available |
| K4KET | 9 | 45 | 2027-10-20 | — | Active (Vanity) |
| K4KEU | 10 | 49 | 2024-07-15 | 2026-07-16 | Available |
| K4KEV | 9 | 51 | 2031-07-26 | — | Active (Vanity) |
| K4KEW | 9 | 51 | 2034-07-10 | — | Active (Vanity) |
| K4KEX | 9 | 53 | 2025-11-28 | — | Active |
| K4KEY | 9 | 55 | 2026-11-04 | — | Active (Vanity) |
| K4KEZ | 9 | 53 | — | — | Available |
| K4KFA | 9 | 55 | 2034-05-07 | — | Active (Vanity) |
| K4KFB | 9 | 59 | 2033-08-18 | — | Active (Vanity) |
| K4KFC | 9 | 61 | 2030-08-28 | — | Active (Vanity) |
| K4KFD | 9 | 57 | 2015-05-08 | 2017-05-09 | Available |
| K4KFE | 9 | 51 | 2004-07-13 | 2006-07-14 | Available |
| K4KFF | 9 | 59 | 2034-12-16 | — | Active (Vanity) |
| K4KFG | 8 | 59 | 2005-03-17 | 2007-03-18 | Available |
| K4KFH | 9 | 57 | 2031-04-05 | — | Active (Vanity) |
| K4KFI | 10 | 53 | 2033-07-09 | — | Active (Vanity) |
| K4KFJ | 10 | 63 | 2027-12-15 | — | Active (Vanity) |