District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4SQV | 10 | 59 | — | — | Available |
| K4SQW | 10 | 59 | 2004-07-15 | 2006-07-16 | Available |
| K4SQX | 10 | 61 | — | — | Available |
| K4SQY | 10 | 63 | — | — | Available |
| K4SQZ | 10 | 61 | — | — | Available |
| K4SRA | 11 | 49 | 2022-01-22 | 2024-01-23 | Available |
| K4SRB | 11 | 53 | 2034-03-21 | — | Active (Vanity) |
| K4SRC | 11 | 55 | 2027-08-17 | — | Active (Vanity) |
| K4SRD | 11 | 51 | 2029-07-09 | — | Active (Vanity) |
| K4SRE | 11 | 45 | 2029-11-06 | — | Active (Vanity) |
| K4SRF | 11 | 53 | 2029-12-03 | — | Active (Vanity) |
| K4SRG | 10 | 53 | 2031-10-12 | — | Active (Vanity) |
| K4SRH | 11 | 51 | — | — | Available |
| K4SRI | 12 | 47 | — | — | Available |
| K4SRJ | 12 | 57 | 2030-03-17 | — | Active (Vanity) |
| K4SRK | 11 | 53 | 2036-03-17 | — | Active (Vanity) |
| K4SRL | 11 | 53 | 2035-01-22 | — | Active (Vanity) |
| K4SRM | 10 | 51 | 2036-10-01 | — | Active (Vanity) |
| K4SRN | 12 | 49 | 2034-01-05 | — | Active (Vanity) |
| K4SRO | 11 | 55 | 2033-08-13 | — | Active (Vanity) |
| K4SRP | 11 | 55 | 2033-06-21 | — | Active (Vanity) |
| K4SRQ | 11 | 57 | 2024-08-03 | 2026-08-04 | Available |
| K4SRR | 12 | 51 | 2035-12-02 | — | Active (Vanity) |
| K4SRS | 12 | 49 | 2035-07-08 | — | Active (Vanity) |
| K4SRT | 11 | 47 | 2032-04-15 | — | Active (Vanity) |
| K4SRU | 12 | 51 | — | — | Available |
| K4SRV | 11 | 53 | 2030-08-21 | — | Active (Vanity) |
| K4SRW | 11 | 53 | 2030-01-07 | — | Active (Vanity) |
| K4SRX | 11 | 55 | 2024-03-05 | 2026-03-06 | Available |
| K4SRY | 11 | 57 | — | — | Available |
| K4SRZ | 11 | 55 | 2033-03-13 | — | Active (Vanity) |
| K4SSA | 11 | 47 | 2036-05-08 | — | Active (Vanity) |
| K4SSB | 11 | 51 | 2027-03-31 | — | Active (Vanity) |
| K4SSC | 11 | 53 | 2026-06-27 | — | Active (Vanity) |
| K4SSD | 11 | 49 | 2027-01-21 | — | Active |
| K4SSE | 11 | 43 | 2027-08-29 | — | Active (Vanity) |
| K4SSF | 11 | 51 | — | — | Available |
| K4SSG | 10 | 51 | 2035-07-15 | — | Active (Vanity) |
| K4SSH | 11 | 49 | 2029-05-26 | — | Active (Vanity) |
| K4SSI | 12 | 45 | 2028-12-04 | — | Active (Vanity) |
| K4SSJ | 12 | 55 | — | — | Available |
| K4SSK | 11 | 51 | 2028-06-19 | — | Active (Vanity) |
| K4SSL | 11 | 51 | 2036-07-29 | — | Active (Vanity) |
| K4SSM | 10 | 49 | 2031-03-25 | — | Active (Vanity) |
| K4SSN | 12 | 47 | 2033-05-30 | — | Active (Vanity) |
| K4SSO | 11 | 53 | 2036-07-11 | — | Active (Vanity) |
| K4SSP | 11 | 53 | 2034-11-22 | — | Active (Vanity) |
| K4SSQ | 11 | 55 | — | — | Available |
| K4SSR | 12 | 49 | 2031-10-30 | — | Active (Vanity) |
| K4SSS | 12 | 47 | 2028-10-03 | — | Active (Vanity) |
| K4SST | 11 | 45 | 2030-03-17 | — | Active (Vanity) |
| K4SSU | 12 | 49 | 2022-03-07 | 2024-03-08 | Available |
| K4SSV | 11 | 51 | 2025-07-13 | — | Active |
| K4SSW | 11 | 51 | 2028-07-03 | — | Active (Vanity) |
| K4SSX | 11 | 53 | 2027-11-16 | — | Active (Vanity) |
| K4SSY | 11 | 55 | — | — | Available |
| K4SSZ | 11 | 53 | 1997-11-17 | 1999-11-18 | Available |
| K4STA | 10 | 45 | 2031-05-10 | — | Active (Vanity) |
| K4STB | 10 | 49 | 2031-03-09 | — | Active (Vanity) |
| K4STC | 10 | 51 | 2028-05-01 | — | Active (Vanity) |
| K4STD | 10 | 47 | — | — | Available |
| K4STE | 10 | 41 | 2033-09-07 | — | Active |
| K4STF | 10 | 49 | 2028-10-23 | — | Active |
| K4STG | 9 | 49 | 2026-01-12 | — | Active (Vanity) |
| K4STH | 10 | 47 | 2031-10-19 | — | Active (Vanity) |
| K4STI | 11 | 43 | 2028-03-03 | — | Active (Vanity) |
| K4STJ | 11 | 53 | 2034-05-07 | — | Active (Vanity) |
| K4STK | 10 | 49 | 2036-11-06 | — | Active (Vanity) |
| K4STL | 10 | 49 | 2025-03-29 | — | Active (Vanity) |
| K4STM | 9 | 47 | 2029-11-06 | — | Active (Vanity) |
| K4STN | 11 | 45 | 2027-12-03 | — | Active |
| K4STO | 10 | 51 | 2034-09-21 | — | Active (Vanity) |
| K4STP | 10 | 51 | 2020-05-11 | 2022-05-12 | Available |
| K4STQ | 10 | 53 | — | — | Available |
| K4STR | 11 | 47 | 2030-01-16 | — | Active |
| K4STS | 11 | 45 | 2029-05-23 | — | Active (Vanity) |
| K4STT | 10 | 43 | 2033-07-02 | — | Active (Vanity) |
| K4STU | 11 | 47 | 2032-05-01 | — | Active (Vanity) |
| K4STV | 10 | 49 | 2030-05-25 | — | Active (Vanity) |
| K4STW | 10 | 49 | 2027-02-13 | — | Active (Vanity) |
| K4STX | 10 | 51 | 2024-11-10 | — | Active (Vanity) |
| K4STY | 10 | 53 | — | — | Available |
| K4STZ | 10 | 51 | — | — | Available |
| K4SUA | 11 | 49 | 2021-07-09 | 2023-07-10 | Available |
| K4SUB | 11 | 53 | 2032-06-18 | — | Active (Vanity) |
| K4SUC | 11 | 55 | — | — | Available |
| K4SUD | 11 | 51 | — | — | Available |
| K4SUE | 11 | 45 | 2028-05-19 | — | Active |
| K4SUF | 11 | 53 | 2029-01-22 | — | Active |
| K4SUG | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| K4SUH | 11 | 51 | — | — | Available |
| K4SUI | 12 | 47 | — | — | Available |
| K4SUJ | 12 | 57 | — | — | Available |
| K4SUK | 11 | 53 | 2031-09-10 | — | Active |
| K4SUL | 11 | 53 | 2035-03-28 | — | Active (Vanity) |
| K4SUM | 10 | 51 | 2008-01-23 | 2010-01-24 | Available |
| K4SUN | 12 | 49 | 2030-11-12 | — | Active |
| K4SUO | 11 | 55 | — | — | Available |
| K4SUP | 11 | 55 | 2035-12-12 | — | Active (Vanity) |
| K4SUQ | 11 | 57 | — | — | Available |