District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4CJO | 10 | 67 | 2028-07-02 | — | Active |
| K4CJP | 10 | 67 | 2036-07-26 | — | Active (Vanity) |
| K4CJQ | 10 | 69 | — | — | Available |
| K4CJR | 11 | 63 | 2033-10-27 | — | Active (Vanity) |
| K4CJS | 11 | 61 | 2035-11-25 | — | Active (Vanity) |
| K4CJT | 10 | 59 | 2027-10-10 | — | Active (Vanity) |
| K4CJU | 11 | 63 | — | — | Available |
| K4CJV | 10 | 65 | 2027-03-06 | — | Active |
| K4CJW | 10 | 65 | 2026-11-05 | — | Active (Vanity) |
| K4CJX | 10 | 67 | 2031-03-19 | — | Active |
| K4CJY | 10 | 69 | 2008-10-27 | 2010-10-28 | Available |
| K4CJZ | 10 | 67 | 2024-05-17 | 2026-05-18 | Available |
| K4CKA | 9 | 57 | 1998-09-09 | 2000-09-10 | Available |
| K4CKB | 9 | 61 | 2027-07-27 | — | Active (Vanity) |
| K4CKC | 9 | 63 | 2032-09-20 | — | Active (Vanity) |
| K4CKD | 9 | 59 | 2019-11-20 | 2021-11-21 | Available |
| K4CKE | 9 | 53 | — | — | Available |
| K4CKF | 9 | 61 | 2030-12-29 | — | Active (Vanity) |
| K4CKG | 8 | 61 | 2033-05-29 | — | Active (Vanity) |
| K4CKH | 9 | 59 | 2014-12-12 | 2016-12-13 | Available |
| K4CKI | 10 | 55 | — | — | Available |
| K4CKJ | 10 | 65 | — | — | Available |
| K4CKK | 9 | 61 | 2028-03-20 | — | Active (Vanity) |
| K4CKL | 9 | 61 | 2033-06-03 | — | Active (Vanity) |
| K4CKM | 8 | 59 | — | — | Available |
| K4CKN | 10 | 57 | — | — | Available |
| K4CKO | 9 | 63 | 2034-09-12 | — | Active |
| K4CKP | 9 | 63 | 2031-05-30 | — | Active (Vanity) |
| K4CKQ | 9 | 65 | 2026-06-17 | — | Active (Vanity) |
| K4CKR | 10 | 59 | 2031-06-29 | — | Active (Vanity) |
| K4CKS | 10 | 57 | 2035-04-25 | — | Active |
| K4CKT | 9 | 55 | 2026-06-28 | — | Active |
| K4CKU | 10 | 59 | — | — | Available |
| K4CKV | 9 | 61 | 1997-12-29 | 1999-12-30 | Available |
| K4CKW | 9 | 61 | 2030-10-11 | — | Active (Vanity) |
| K4CKX | 9 | 63 | 2004-02-22 | 2006-02-23 | Available |
| K4CKY | 9 | 65 | 2036-01-17 | — | Active (Vanity) |
| K4CKZ | 9 | 63 | — | — | Available |
| K4CLA | 9 | 57 | 2027-03-24 | — | Active |
| K4CLB | 9 | 61 | 2025-04-05 | — | Active (Vanity) |
| K4CLC | 9 | 63 | 2030-10-24 | — | Active (Vanity) |
| K4CLD | 9 | 59 | 2023-02-13 | 2025-02-14 | Available |
| K4CLE | 9 | 53 | 2028-09-23 | — | Active |
| K4CLF | 9 | 61 | 2029-08-02 | — | Active (Vanity) |
| K4CLG | 8 | 61 | 2025-03-08 | — | Active |
| K4CLH | 9 | 59 | 2027-02-24 | — | Active (Vanity) |
| K4CLI | 10 | 55 | 2021-11-01 | 2023-11-02 | Available |
| K4CLJ | 10 | 65 | 2029-01-11 | — | Active |
| K4CLK | 9 | 61 | 2035-02-04 | — | Active (Vanity) |
| K4CLL | 9 | 61 | 2034-01-13 | — | Active (Vanity) |
| K4CLM | 8 | 59 | 2032-05-04 | — | Active (Vanity) |
| K4CLN | 10 | 57 | 2027-01-10 | — | Active (Vanity) |
| K4CLO | 9 | 63 | 2023-02-15 | 2025-02-16 | Available |
| K4CLP | 9 | 63 | 2027-07-14 | — | Active (Vanity) |
| K4CLQ | 9 | 65 | 2017-09-23 | 2019-09-24 | Available |
| K4CLR | 10 | 59 | 2036-03-10 | — | Active (Vanity) |
| K4CLS | 10 | 57 | 2028-12-01 | — | Active (Vanity) |
| K4CLT | 9 | 55 | 2031-04-02 | — | Active (Vanity) |
| K4CLU | 10 | 59 | — | — | Available |
| K4CLV | 9 | 61 | 2034-11-26 | — | Active (Vanity) |
| K4CLW | 9 | 61 | 2031-08-31 | — | Active (Vanity) |
| K4CLX | 9 | 63 | 2032-12-23 | — | Active (Vanity) |
| K4CLY | 9 | 65 | 2026-06-14 | — | Active |
| K4CLZ | 9 | 63 | — | — | Available |
| K4CMA | 8 | 55 | 2029-01-16 | — | Active (Vanity) |
| K4CMB | 8 | 59 | 2036-07-17 | — | Active |
| K4CMC | 8 | 61 | 2031-04-17 | — | Active (Vanity) |
| K4CMD | 8 | 57 | 2036-02-20 | — | Active (Vanity) |
| K4CME | 8 | 51 | 2030-04-21 | — | Active (Vanity) |
| K4CMF | 8 | 59 | 2030-11-17 | — | Active (Vanity) |
| K4CMG | 7 | 59 | 2026-05-03 | — | Active (Vanity) |
| K4CMH | 8 | 57 | 2036-07-07 | — | Active (Vanity) |
| K4CMI | 9 | 53 | 2024-03-05 | 2026-03-06 | Available |
| K4CMJ | 9 | 63 | 2029-12-25 | — | Active (Vanity) |
| K4CMK | 8 | 59 | 2033-07-22 | — | Active (Vanity) |
| K4CML | 8 | 59 | 2036-10-16 | — | Active |
| K4CMM | 7 | 57 | 2036-08-05 | — | Active (Vanity) |
| K4CMN | 9 | 55 | — | — | Available |
| K4CMO | 8 | 61 | — | — | Available |
| K4CMP | 8 | 61 | 2027-10-16 | — | Active (Vanity) |
| K4CMQ | 8 | 63 | 2035-01-01 | — | Active (Vanity) |
| K4CMR | 9 | 57 | 2035-01-08 | — | Active (Vanity) |
| K4CMS | 9 | 55 | 2026-06-29 | — | Active (Vanity) |
| K4CMT | 8 | 53 | 2024-08-09 | 2026-08-10 | Available |
| K4CMU | 9 | 57 | 2034-01-23 | — | Active (Vanity) |
| K4CMV | 8 | 59 | — | — | Available |
| K4CMW | 8 | 59 | 2036-04-14 | — | Active (Vanity) |
| K4CMX | 8 | 61 | 2026-09-11 | 2028-09-12 | Canceled (grace period) |
| K4CMY | 8 | 63 | 2027-01-15 | — | Active |
| K4CMZ | 8 | 61 | 2031-08-27 | — | Active |
| K4CNA | 10 | 53 | 2029-04-26 | — | Active (Vanity) |
| K4CNB | 10 | 57 | 2023-08-24 | 2025-08-25 | Available |
| K4CNC | 10 | 59 | 2034-07-15 | — | Active |
| K4CND | 10 | 55 | 2032-10-18 | — | Active (Vanity) |
| K4CNE | 10 | 49 | — | — | Available |
| K4CNF | 10 | 57 | 2031-10-02 | — | Active (Vanity) |
| K4CNG | 9 | 57 | 2030-09-25 | — | Active (Vanity) |
| K4CNH | 10 | 55 | 2020-08-21 | 2022-08-22 | Available |
| K4CNI | 11 | 51 | — | — | Available |
| K4CNJ | 11 | 61 | — | — | Available |