District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4OUQ | 10 | 63 | — | — | Available |
| K4OUR | 11 | 57 | 2034-08-23 | — | Active (Vanity) |
| K4OUS | 11 | 55 | — | — | Available |
| K4OUT | 10 | 53 | 2027-04-07 | — | Active |
| K4OUU | 11 | 57 | — | — | Available |
| K4OUV | 10 | 59 | — | — | Available |
| K4OUW | 10 | 59 | 2026-05-09 | — | Active |
| K4OUX | 10 | 61 | 2034-03-02 | — | Active (Vanity) |
| K4OUY | 10 | 63 | — | — | Available |
| K4OUZ | 10 | 61 | 2027-07-21 | — | Active |
| K4OVA | 9 | 57 | 2028-04-13 | — | Active (Vanity) |
| K4OVB | 9 | 61 | — | — | Available |
| K4OVC | 9 | 63 | 2030-10-06 | — | Active (Vanity) |
| K4OVD | 9 | 59 | — | — | Available |
| K4OVE | 9 | 53 | 2006-12-12 | 2008-12-13 | Available |
| K4OVF | 9 | 61 | — | — | Available |
| K4OVG | 8 | 61 | 2021-03-23 | 2023-03-24 | Available |
| K4OVH | 9 | 59 | 2028-01-04 | — | Active |
| K4OVI | 10 | 55 | — | — | Available |
| K4OVJ | 10 | 65 | — | — | Available |
| K4OVK | 9 | 61 | 2017-11-13 | 2019-11-14 | Available |
| K4OVL | 9 | 61 | — | — | Available |
| K4OVM | 8 | 59 | — | — | Available |
| K4OVN | 10 | 57 | — | — | Available |
| K4OVO | 9 | 63 | 2034-03-23 | — | Active (Vanity) |
| K4OVP | 9 | 63 | 2024-03-05 | 2026-03-06 | Available |
| K4OVQ | 9 | 65 | 2006-01-24 | 2008-01-25 | Available |
| K4OVR | 10 | 59 | 2026-08-29 | — | Active (Vanity) |
| K4OVS | 10 | 57 | 2035-01-17 | — | Active |
| K4OVT | 9 | 55 | — | — | Available |
| K4OVU | 10 | 59 | — | — | Available |
| K4OVV | 9 | 61 | 2020-09-18 | 2022-09-19 | Available |
| K4OVW | 9 | 61 | 2020-03-17 | 2022-03-18 | Available |
| K4OVX | 9 | 63 | — | — | Available |
| K4OVY | 9 | 65 | 2032-06-14 | — | Active (Vanity) |
| K4OVZ | 9 | 63 | — | — | Available |
| K4OWA | 9 | 57 | — | — | Available |
| K4OWB | 9 | 61 | 2032-03-06 | — | Active (Vanity) |
| K4OWC | 9 | 63 | — | — | Available |
| K4OWD | 9 | 59 | 2014-09-14 | 2016-09-15 | Available |
| K4OWE | 9 | 53 | — | — | Available |
| K4OWF | 9 | 61 | — | — | Available |
| K4OWG | 8 | 61 | — | — | Available |
| K4OWH | 9 | 59 | — | — | Available |
| K4OWI | 10 | 55 | — | — | Available |
| K4OWJ | 10 | 65 | — | — | Available |
| K4OWK | 9 | 61 | 2022-07-27 | 2024-07-28 | Available |
| K4OWL | 9 | 61 | 2030-09-26 | — | Active (Vanity) |
| K4OWM | 8 | 59 | 2036-06-20 | — | Active (Vanity) |
| K4OWN | 10 | 57 | 2030-02-19 | — | Active |
| K4OWO | 9 | 63 | 2028-12-27 | — | Active (Vanity) |
| K4OWP | 9 | 63 | 2018-06-20 | 2020-06-21 | Available |
| K4OWQ | 9 | 65 | 1998-03-15 | 2000-03-16 | Available |
| K4OWR | 10 | 59 | 2020-07-26 | 2022-07-27 | Available |
| K4OWS | 10 | 57 | — | — | Available |
| K4OWT | 9 | 55 | — | — | Available |
| K4OWU | 10 | 59 | — | — | Available |
| K4OWV | 9 | 61 | — | — | Available |
| K4OWW | 9 | 61 | — | — | Available |
| K4OWX | 9 | 63 | 2029-03-22 | — | Active (Vanity) |
| K4OWY | 9 | 65 | — | — | Available |
| K4OWZ | 9 | 63 | — | — | Available |
| K4OXA | 9 | 59 | — | — | Available |
| K4OXB | 9 | 63 | — | — | Available |
| K4OXC | 9 | 65 | 2034-03-23 | — | Active (Vanity) |
| K4OXD | 9 | 61 | — | — | Available |
| K4OXE | 9 | 55 | 2035-03-11 | — | Active (Vanity) |
| K4OXF | 9 | 63 | 2023-04-09 | 2025-04-10 | Available |
| K4OXG | 8 | 63 | 2029-02-26 | — | Active (Vanity) |
| K4OXH | 9 | 61 | — | — | Available |
| K4OXI | 10 | 57 | — | — | Available |
| K4OXJ | 10 | 67 | — | — | Available |
| K4OXK | 9 | 63 | — | — | Available |
| K4OXL | 9 | 63 | 2017-08-01 | 2019-08-02 | Available |
| K4OXM | 8 | 61 | 2027-05-16 | — | Active (Vanity) |
| K4OXN | 10 | 59 | — | — | Available |
| K4OXO | 9 | 65 | 2028-01-26 | — | Active (Vanity) |
| K4OXP | 9 | 65 | 2018-09-15 | 2020-09-16 | Available |
| K4OXQ | 9 | 67 | 2029-08-27 | — | Active (Vanity) |
| K4OXR | 10 | 61 | — | — | Available |
| K4OXS | 10 | 59 | — | — | Available |
| K4OXT | 9 | 57 | — | — | Available |
| K4OXU | 10 | 61 | 2007-09-22 | 2009-09-23 | Available |
| K4OXV | 9 | 63 | — | — | Available |
| K4OXW | 9 | 63 | — | — | Available |
| K4OXX | 9 | 65 | — | — | Available |
| K4OXY | 9 | 67 | — | — | Available |
| K4OXZ | 9 | 65 | — | — | Available |
| K4OYA | 9 | 61 | 2032-03-24 | — | Active (Vanity) |
| K4OYB | 9 | 65 | — | — | Available |
| K4OYC | 9 | 67 | 2034-07-06 | — | Active (Vanity) |
| K4OYD | 9 | 63 | — | — | Available |
| K4OYE | 9 | 57 | — | — | Available |
| K4OYF | 9 | 65 | — | — | Available |
| K4OYG | 8 | 65 | — | — | Available |
| K4OYH | 9 | 63 | — | — | Available |
| K4OYI | 10 | 59 | — | — | Available |
| K4OYJ | 10 | 69 | — | — | Available |
| K4OYK | 9 | 65 | — | — | Available |
| K4OYL | 9 | 65 | 2026-06-07 | — | Active (Vanity) |