District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4UWN | 11 | 53 | 2025-05-12 | — | Active |
| K4UWO | 10 | 59 | — | — | Available |
| K4UWP | 10 | 59 | — | — | Available |
| K4UWQ | 10 | 61 | 2004-07-14 | 2006-07-15 | Available |
| K4UWR | 11 | 55 | 2006-05-22 | 2008-05-23 | Available |
| K4UWS | 11 | 53 | 2032-04-15 | — | Active (Vanity) |
| K4UWT | 10 | 51 | — | — | Available |
| K4UWU | 11 | 55 | 2035-03-11 | — | Active (Vanity) |
| K4UWV | 10 | 57 | — | — | Available |
| K4UWW | 10 | 57 | — | — | Available |
| K4UWX | 10 | 59 | — | — | Available |
| K4UWY | 10 | 61 | — | — | Available |
| K4UWZ | 10 | 59 | — | — | Available |
| K4UXA | 10 | 55 | — | — | Available |
| K4UXB | 10 | 59 | — | — | Available |
| K4UXC | 10 | 61 | — | — | Available |
| K4UXD | 10 | 57 | — | — | Available |
| K4UXE | 10 | 51 | — | — | Available |
| K4UXF | 10 | 59 | 2033-11-09 | — | Active |
| K4UXG | 9 | 59 | 2031-04-08 | — | Active (Vanity) |
| K4UXH | 10 | 57 | — | — | Available |
| K4UXI | 11 | 53 | — | — | Available |
| K4UXJ | 11 | 63 | — | — | Available |
| K4UXK | 10 | 59 | 2016-12-17 | 2018-12-18 | Available |
| K4UXL | 10 | 59 | — | — | Available |
| K4UXM | 9 | 57 | — | — | Available |
| K4UXN | 11 | 55 | — | — | Available |
| K4UXO | 10 | 61 | 2030-04-07 | — | Active (Vanity) |
| K4UXP | 10 | 61 | 2027-10-03 | — | Active (Vanity) |
| K4UXQ | 10 | 63 | — | — | Available |
| K4UXR | 11 | 57 | — | — | Available |
| K4UXS | 11 | 55 | — | — | Available |
| K4UXT | 10 | 53 | — | — | Available |
| K4UXU | 11 | 57 | 2001-11-26 | 2003-11-27 | Available |
| K4UXV | 10 | 59 | — | — | Available |
| K4UXW | 10 | 59 | — | — | Available |
| K4UXX | 10 | 61 | — | — | Available |
| K4UXY | 10 | 63 | — | — | Available |
| K4UXZ | 10 | 61 | 2017-12-23 | 2019-12-24 | Available |
| K4UYA | 10 | 57 | — | — | Available |
| K4UYB | 10 | 61 | 2028-03-09 | — | Active |
| K4UYC | 10 | 63 | 2014-11-16 | 2016-11-17 | Available |
| K4UYD | 10 | 59 | 2032-07-29 | — | Active (Vanity) |
| K4UYE | 10 | 53 | — | — | Available |
| K4UYF | 10 | 61 | — | — | Available |
| K4UYG | 9 | 61 | — | — | Available |
| K4UYH | 10 | 59 | — | — | Available |
| K4UYI | 11 | 55 | — | — | Available |
| K4UYJ | 11 | 65 | — | — | Available |
| K4UYK | 10 | 61 | — | — | Available |
| K4UYL | 10 | 61 | — | — | Available |
| K4UYM | 9 | 59 | — | — | Available |
| K4UYN | 11 | 57 | 2025-02-24 | — | Active |
| K4UYO | 10 | 63 | — | — | Available |
| K4UYP | 10 | 63 | — | — | Available |
| K4UYQ | 10 | 65 | 2032-04-22 | — | Active (Vanity) |
| K4UYR | 11 | 59 | 2016-10-02 | 2018-10-03 | Available |
| K4UYS | 11 | 57 | — | — | Available |
| K4UYT | 10 | 55 | — | — | Available |
| K4UYU | 11 | 59 | — | — | Available |
| K4UYV | 10 | 61 | — | — | Available |
| K4UYW | 10 | 61 | — | — | Available |
| K4UYX | 10 | 63 | — | — | Available |
| K4UYY | 10 | 65 | — | — | Available |
| K4UYZ | 10 | 63 | 2035-02-13 | — | Active (Vanity) |
| K4UZA | 10 | 55 | 2001-03-13 | 2003-03-14 | Available |
| K4UZB | 10 | 59 | — | — | Available |
| K4UZC | 10 | 61 | — | — | Available |
| K4UZD | 10 | 57 | — | — | Available |
| K4UZE | 10 | 51 | 2014-04-05 | 2016-04-06 | Available |
| K4UZF | 10 | 59 | 1997-11-24 | 1999-11-25 | Available |
| K4UZG | 9 | 59 | — | — | Available |
| K4UZH | 10 | 57 | — | — | Available |
| K4UZI | 11 | 53 | 2028-12-02 | — | Active (Vanity) |
| K4UZJ | 11 | 63 | — | — | Available |
| K4UZK | 10 | 59 | — | — | Available |
| K4UZL | 10 | 59 | — | — | Available |
| K4UZM | 9 | 57 | 2029-02-10 | — | Active (Vanity) |
| K4UZN | 11 | 55 | — | — | Available |
| K4UZO | 10 | 61 | — | — | Available |
| K4UZP | 10 | 61 | — | — | Available |
| K4UZQ | 10 | 63 | 2008-09-10 | 2010-09-11 | Available |
| K4UZR | 11 | 57 | — | — | Available |
| K4UZS | 11 | 55 | — | — | Available |
| K4UZT | 10 | 53 | 2027-04-27 | — | Active (Vanity) |
| K4UZU | 11 | 57 | — | — | Available |
| K4UZV | 10 | 59 | — | — | Available |
| K4UZW | 10 | 59 | — | — | Available |
| K4UZX | 10 | 61 | — | — | Available |
| K4UZY | 10 | 63 | — | — | Available |
| K4UZZ | 10 | 61 | — | — | Available |
| K4VAA | 9 | 51 | 2029-07-02 | — | Active (Vanity) |
| K4VAB | 9 | 55 | 2026-08-23 | — | Active (Vanity) |
| K4VAC | 9 | 57 | 2033-08-15 | — | Active (Vanity) |
| K4VAD | 9 | 53 | — | — | Available |
| K4VAE | 9 | 47 | 2028-01-14 | — | Active (Vanity) |
| K4VAF | 9 | 55 | 2035-01-13 | — | Active |
| K4VAG | 8 | 55 | 2028-05-02 | — | Active (Vanity) |
| K4VAH | 9 | 53 | 2023-01-19 | 2025-01-20 | Available |
| K4VAI | 10 | 49 | 2024-05-31 | 2026-06-01 | Available |