District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4SJC | 11 | 61 | 2035-12-08 | — | Active (Vanity) |
| K4SJD | 11 | 57 | — | — | Available |
| K4SJE | 11 | 51 | — | — | Available |
| K4SJF | 11 | 59 | 2033-07-14 | — | Active (Vanity) |
| K4SJG | 10 | 59 | — | — | Available |
| K4SJH | 11 | 57 | 2028-06-28 | — | Active (Vanity) |
| K4SJI | 12 | 53 | — | — | Available |
| K4SJJ | 12 | 63 | 2026-11-01 | — | Active (Vanity) |
| K4SJK | 11 | 59 | — | — | Available |
| K4SJL | 11 | 59 | — | — | Available |
| K4SJM | 10 | 57 | 2020-05-19 | 2022-05-20 | Available |
| K4SJN | 12 | 55 | — | — | Available |
| K4SJO | 11 | 61 | — | — | Available |
| K4SJP | 11 | 61 | 2034-06-08 | — | Active (Vanity) |
| K4SJQ | 11 | 63 | — | — | Available |
| K4SJR | 12 | 57 | 2033-03-21 | — | Active (Vanity) |
| K4SJS | 12 | 55 | 2028-08-14 | — | Active (Vanity) |
| K4SJT | 11 | 53 | 2028-03-22 | — | Active |
| K4SJU | 12 | 57 | — | — | Available |
| K4SJV | 11 | 59 | — | — | Available |
| K4SJW | 11 | 59 | 2019-11-06 | 2021-11-07 | Available |
| K4SJX | 11 | 61 | — | — | Available |
| K4SJY | 11 | 63 | — | — | Available |
| K4SJZ | 11 | 61 | 2011-02-11 | 2013-02-12 | Available |
| K4SKA | 10 | 51 | 2030-12-03 | — | Active (Vanity) |
| K4SKB | 10 | 55 | 2011-04-22 | 2013-04-23 | Available |
| K4SKC | 10 | 57 | — | — | Available |
| K4SKD | 10 | 53 | 2030-04-16 | — | Active (Vanity) |
| K4SKE | 10 | 47 | — | — | Available |
| K4SKF | 10 | 55 | — | — | Available |
| K4SKG | 9 | 55 | 2033-05-06 | — | Active (Vanity) |
| K4SKH | 10 | 53 | — | — | Available |
| K4SKI | 11 | 49 | 2027-05-19 | — | Active (Vanity) |
| K4SKJ | 11 | 59 | — | — | Available |
| K4SKK | 10 | 55 | — | — | Available |
| K4SKL | 10 | 55 | — | — | Available |
| K4SKM | 9 | 53 | 2024-12-12 | — | Active (Vanity) |
| K4SKN | 11 | 51 | — | — | Available |
| K4SKO | 10 | 57 | 2032-01-28 | — | Active (Vanity) |
| K4SKP | 10 | 57 | 2030-01-03 | — | Active (Vanity) |
| K4SKQ | 10 | 59 | — | — | Available |
| K4SKR | 11 | 53 | 2028-01-13 | — | Active (Vanity) |
| K4SKS | 11 | 51 | 2032-09-13 | — | Active (Vanity) |
| K4SKT | 10 | 49 | 2031-03-26 | — | Active (Vanity) |
| K4SKU | 11 | 53 | — | — | Available |
| K4SKV | 10 | 55 | — | — | Available |
| K4SKW | 10 | 55 | 2031-02-17 | — | Active (Vanity) |
| K4SKX | 10 | 57 | 2027-09-06 | — | Active (Vanity) |
| K4SKY | 10 | 59 | 2034-04-30 | — | Active (Vanity) |
| K4SKZ | 10 | 57 | — | — | Available |
| K4SLA | 10 | 51 | 2028-06-05 | — | Active (Vanity) |
| K4SLB | 10 | 55 | 2027-08-01 | — | Active (Vanity) |
| K4SLC | 10 | 57 | 2036-02-23 | — | Active (Vanity) |
| K4SLD | 10 | 53 | 2033-09-26 | — | Active (Vanity) |
| K4SLE | 10 | 47 | 2032-11-27 | — | Active (Vanity) |
| K4SLF | 10 | 55 | 2035-07-25 | — | Active (Vanity) |
| K4SLG | 9 | 55 | 2034-06-19 | — | Active (Vanity) |
| K4SLH | 10 | 53 | 2020-12-31 | 2023-01-01 | Available |
| K4SLI | 11 | 49 | — | — | Available |
| K4SLJ | 11 | 59 | 2031-04-03 | — | Active (Vanity) |
| K4SLK | 10 | 55 | 2033-02-07 | — | Active (Vanity) |
| K4SLL | 10 | 55 | — | — | Available |
| K4SLM | 9 | 53 | 2035-02-21 | — | Active (Vanity) |
| K4SLN | 11 | 51 | — | — | Available |
| K4SLO | 10 | 57 | — | — | Available |
| K4SLP | 10 | 57 | 2027-11-25 | — | Active (Vanity) |
| K4SLQ | 10 | 59 | 2027-03-28 | — | Active |
| K4SLR | 11 | 53 | 2031-08-28 | — | Active (Vanity) |
| K4SLS | 11 | 51 | 2028-02-26 | — | Active |
| K4SLT | 10 | 49 | 2024-03-28 | 2026-03-29 | Available |
| K4SLU | 11 | 53 | 2027-02-06 | — | Active |
| K4SLV | 10 | 55 | 2023-09-17 | 2025-09-18 | Available |
| K4SLW | 10 | 55 | 2031-05-11 | — | Active (Vanity) |
| K4SLX | 10 | 57 | 2030-11-11 | — | Active (Vanity) |
| K4SLY | 10 | 59 | 2036-04-24 | — | Active (Vanity) |
| K4SLZ | 10 | 57 | 2027-04-11 | — | Active (Vanity) |
| K4SMA | 9 | 49 | 2029-04-25 | — | Active (Vanity) |
| K4SMB | 9 | 53 | 2033-03-26 | — | Active (Vanity) |
| K4SMC | 9 | 55 | 2029-08-14 | — | Active (Vanity) |
| K4SMD | 9 | 51 | 2031-08-02 | — | Active (Vanity) |
| K4SME | 9 | 45 | 2029-02-02 | — | Active (Vanity) |
| K4SMF | 9 | 53 | 2031-08-17 | — | Active (Vanity) |
| K4SMG | 8 | 53 | 2036-01-03 | — | Active (Vanity) |
| K4SMH | 9 | 51 | 2034-10-24 | — | Active (Vanity) |
| K4SMI | 10 | 47 | 2024-04-09 | 2026-04-10 | Available |
| K4SMJ | 10 | 57 | 2032-04-16 | — | Active (Vanity) |
| K4SMK | 9 | 53 | 2027-04-03 | — | Active (Vanity) |
| K4SML | 9 | 53 | 2033-08-20 | — | Active (Vanity) |
| K4SMM | 8 | 51 | 2030-03-13 | — | Active (Vanity) |
| K4SMN | 10 | 49 | 2029-01-16 | — | Active (Vanity) |
| K4SMO | 9 | 55 | — | — | Pending Application |
| K4SMP | 9 | 55 | 2031-10-23 | — | Active (Vanity) |
| K4SMQ | 9 | 57 | — | — | Available |
| K4SMR | 10 | 51 | 2021-02-10 | 2023-02-11 | Available |
| K4SMS | 10 | 49 | 2027-05-02 | — | Active (Vanity) |
| K4SMT | 9 | 47 | 2030-01-29 | — | Active (Vanity) |
| K4SMU | 10 | 51 | 2031-02-05 | — | Active (Vanity) |
| K4SMV | 9 | 53 | 2004-04-26 | 2006-04-27 | Available |
| K4SMW | 9 | 53 | 2033-07-02 | — | Active (Vanity) |
| K4SMX | 9 | 55 | 2017-11-19 | 2019-11-20 | Available |