District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4SYN | 11 | 55 | 2029-03-01 | — | Active (Vanity) |
| K4SYO | 10 | 61 | 2035-03-15 | — | Active (Vanity) |
| K4SYP | 10 | 61 | 2012-01-21 | 2014-01-22 | Available |
| K4SYQ | 10 | 63 | — | — | Available |
| K4SYR | 11 | 57 | 2018-01-07 | 2020-01-08 | Available |
| K4SYS | 11 | 55 | 2036-08-21 | — | Active (Vanity) |
| K4SYT | 10 | 53 | 2035-08-01 | — | Active (Vanity) |
| K4SYU | 11 | 57 | 2017-10-23 | 2019-10-24 | Available |
| K4SYV | 10 | 59 | 2024-04-08 | 2026-04-09 | Available |
| K4SYW | 10 | 59 | 2027-10-13 | — | Active (Vanity) |
| K4SYX | 10 | 61 | — | — | Available |
| K4SYY | 10 | 63 | 2028-08-01 | — | Active (Vanity) |
| K4SYZ | 10 | 61 | — | — | Available |
| K4SZA | 10 | 53 | — | — | Available |
| K4SZB | 10 | 57 | — | — | Available |
| K4SZC | 10 | 59 | 2010-07-07 | 2012-07-08 | Available |
| K4SZD | 10 | 55 | 2031-11-09 | — | Active (Vanity) |
| K4SZE | 10 | 49 | — | — | Available |
| K4SZF | 10 | 57 | 2015-11-28 | 2017-11-29 | Available |
| K4SZG | 9 | 57 | — | — | Available |
| K4SZH | 10 | 55 | — | — | Available |
| K4SZI | 11 | 51 | — | — | Available |
| K4SZJ | 11 | 61 | — | — | Available |
| K4SZK | 10 | 57 | — | — | Available |
| K4SZL | 10 | 57 | 2033-06-25 | — | Active (Vanity) |
| K4SZM | 9 | 55 | — | — | Available |
| K4SZN | 11 | 53 | 2031-04-13 | — | Active (Vanity) |
| K4SZO | 10 | 59 | — | — | Available |
| K4SZP | 10 | 59 | — | — | Available |
| K4SZQ | 10 | 61 | 2025-03-17 | — | Active |
| K4SZR | 11 | 55 | — | — | Available |
| K4SZS | 11 | 53 | 2035-08-05 | — | Active (Vanity) |
| K4SZT | 10 | 51 | — | — | Available |
| K4SZU | 11 | 55 | — | — | Available |
| K4SZV | 10 | 57 | — | — | Available |
| K4SZW | 10 | 57 | 2027-07-14 | — | Active (Vanity) |
| K4SZX | 10 | 59 | — | — | Available |
| K4SZY | 10 | 61 | — | — | Available |
| K4SZZ | 10 | 59 | 2031-04-30 | — | Active (Vanity) |
| K4TAA | 9 | 45 | 2031-06-22 | — | Active (Vanity) |
| K4TAB | 9 | 49 | 2030-03-14 | — | Active (Vanity) |
| K4TAC | 9 | 51 | 2027-08-11 | — | Active (Vanity) |
| K4TAD | 9 | 47 | 2029-03-26 | — | Active (Vanity) |
| K4TAE | 9 | 41 | — | — | Available |
| K4TAF | 9 | 49 | 2031-09-17 | — | Active |
| K4TAG | 8 | 49 | 2027-09-17 | — | Active (Vanity) |
| K4TAH | 9 | 47 | 2034-02-03 | — | Active (Vanity) |
| K4TAI | 10 | 43 | — | — | Available |
| K4TAJ | 10 | 53 | 2027-01-18 | — | Active (Vanity) |
| K4TAK | 9 | 49 | 2028-11-12 | — | Active (Vanity) |
| K4TAL | 9 | 49 | 2027-11-24 | — | Active (Vanity) |
| K4TAM | 8 | 47 | 2035-03-21 | — | Active (Vanity) |
| K4TAN | 10 | 45 | 2033-10-17 | — | Active (Vanity) |
| K4TAO | 9 | 51 | 2032-11-04 | — | Active (Vanity) |
| K4TAP | 9 | 51 | 2036-08-20 | — | Active (Vanity) |
| K4TAQ | 9 | 53 | 2036-11-28 | — | Active (Vanity) |
| K4TAR | 10 | 47 | 2027-03-03 | — | Active (Vanity) |
| K4TAS | 10 | 45 | 2035-01-17 | — | Active |
| K4TAT | 9 | 43 | 2027-10-14 | — | Active (Vanity) |
| K4TAU | 10 | 47 | 2031-02-06 | — | Active (Vanity) |
| K4TAV | 9 | 49 | 2033-07-14 | — | Active (Vanity) |
| K4TAW | 9 | 49 | 2035-03-29 | — | Active (Vanity) |
| K4TAX | 9 | 51 | 2036-12-24 | — | Active |
| K4TAY | 9 | 53 | 2031-08-31 | — | Active (Vanity) |
| K4TAZ | 9 | 51 | 2024-11-21 | — | Active |
| K4TBA | 9 | 49 | 2035-01-31 | — | Active (Vanity) |
| K4TBB | 9 | 53 | 2027-07-18 | — | Active (Vanity) |
| K4TBC | 9 | 55 | 2026-10-22 | — | Active (Vanity) |
| K4TBD | 9 | 51 | 2036-11-18 | — | Active (Vanity) |
| K4TBE | 9 | 45 | 2028-06-15 | — | Active |
| K4TBF | 9 | 53 | — | — | Available |
| K4TBG | 8 | 53 | — | — | Available |
| K4TBH | 9 | 51 | 2028-04-19 | — | Active (Vanity) |
| K4TBI | 10 | 47 | 2029-11-21 | — | Active (Vanity) |
| K4TBJ | 10 | 57 | 2036-01-16 | — | Active (Vanity) |
| K4TBK | 9 | 53 | — | — | Available |
| K4TBL | 9 | 53 | 2032-01-07 | — | Active (Vanity) |
| K4TBM | 8 | 51 | 2026-05-09 | — | Active |
| K4TBN | 10 | 49 | 2030-03-28 | — | Active (Vanity) |
| K4TBO | 9 | 55 | 2018-09-01 | 2020-09-02 | Available |
| K4TBP | 9 | 55 | — | — | Available |
| K4TBQ | 9 | 57 | 1998-07-19 | 2000-07-20 | Available |
| K4TBR | 10 | 51 | 2032-10-27 | — | Active (Vanity) |
| K4TBS | 10 | 49 | 2029-06-25 | — | Active (Vanity) |
| K4TBT | 9 | 47 | 2031-12-28 | — | Active (Vanity) |
| K4TBU | 10 | 51 | — | — | Available |
| K4TBV | 9 | 53 | — | — | Available |
| K4TBW | 9 | 53 | — | — | Available |
| K4TBX | 9 | 55 | 2033-06-10 | — | Active (Vanity) |
| K4TBY | 9 | 57 | 2029-06-21 | — | Active (Vanity) |
| K4TBZ | 9 | 55 | 2013-04-26 | 2015-04-27 | Available |
| K4TCA | 9 | 51 | 2031-02-23 | — | Active (Vanity) |
| K4TCB | 9 | 55 | 2025-08-30 | — | Active (Vanity) |
| K4TCC | 9 | 57 | 2028-11-24 | — | Active (Vanity) |
| K4TCD | 9 | 53 | 2033-12-06 | — | Active (Vanity) |
| K4TCE | 9 | 47 | 2028-11-27 | — | Active (Vanity) |
| K4TCF | 9 | 55 | 2027-11-03 | — | Active (Vanity) |
| K4TCG | 8 | 55 | 2027-08-21 | — | Active (Vanity) |
| K4TCH | 9 | 53 | 2031-06-07 | — | Active (Vanity) |
| K4TCI | 10 | 49 | 2030-01-18 | — | Active (Vanity) |