District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4KUU | 11 | 55 | 2009-12-19 | 2011-12-20 | Available |
| K4KUV | 10 | 57 | — | — | Available |
| K4KUW | 10 | 57 | 2006-06-07 | 2008-06-08 | Available |
| K4KUX | 10 | 59 | — | — | Available |
| K4KUY | 10 | 61 | 2006-04-02 | 2008-04-03 | Available |
| K4KUZ | 10 | 59 | 2035-02-08 | — | Active (Vanity) |
| K4KVA | 9 | 55 | 2035-12-30 | — | Active (Vanity) |
| K4KVB | 9 | 59 | 2035-07-22 | — | Active (Vanity) |
| K4KVC | 9 | 61 | 2030-03-27 | — | Active (Vanity) |
| K4KVD | 9 | 57 | 2014-12-12 | 2016-12-13 | Available |
| K4KVE | 9 | 51 | 2022-09-24 | 2024-09-25 | Available |
| K4KVF | 9 | 59 | 2011-04-05 | 2013-04-06 | Available |
| K4KVG | 8 | 59 | — | — | Available |
| K4KVH | 9 | 57 | 2031-04-02 | — | Active (Vanity) |
| K4KVI | 10 | 53 | 2031-04-06 | — | Active (Vanity) |
| K4KVJ | 10 | 63 | 2027-02-13 | — | Active (Vanity) |
| K4KVK | 9 | 59 | 2025-06-07 | — | Active |
| K4KVL | 9 | 59 | 1998-10-18 | 2000-10-19 | Available |
| K4KVM | 8 | 57 | 2026-07-16 | — | Active (Vanity) |
| K4KVN | 10 | 55 | 2035-04-17 | — | Active (Vanity) |
| K4KVO | 9 | 61 | 2033-09-21 | — | Active (Vanity) |
| K4KVP | 9 | 61 | 2034-05-10 | — | Active (Vanity) |
| K4KVQ | 9 | 63 | 2005-06-05 | 2007-06-06 | Available |
| K4KVR | 10 | 57 | 2034-07-14 | — | Active |
| K4KVS | 10 | 55 | 2027-03-24 | — | Active |
| K4KVT | 9 | 53 | — | — | Available |
| K4KVU | 10 | 57 | — | — | Available |
| K4KVV | 9 | 59 | — | — | Available |
| K4KVW | 9 | 59 | 2004-07-22 | 2006-07-23 | Available |
| K4KVX | 9 | 61 | — | — | Available |
| K4KVY | 9 | 63 | — | — | Available |
| K4KVZ | 9 | 61 | — | — | Available |
| K4KWA | 9 | 55 | — | — | Available |
| K4KWB | 9 | 59 | 2037-01-18 | — | Active (Vanity) |
| K4KWC | 9 | 61 | 2033-11-09 | — | Active (Vanity) |
| K4KWD | 9 | 57 | 2028-06-08 | — | Active (Vanity) |
| K4KWE | 9 | 51 | — | — | Available |
| K4KWF | 9 | 59 | 2024-06-07 | 2026-06-08 | Available |
| K4KWG | 8 | 59 | 2032-05-24 | — | Active (Vanity) |
| K4KWH | 9 | 57 | 2027-09-17 | — | Active (Vanity) |
| K4KWI | 10 | 53 | — | — | Available |
| K4KWJ | 10 | 63 | 2030-09-18 | — | Active (Vanity) |
| K4KWK | 9 | 59 | 2023-06-20 | 2025-06-21 | Available |
| K4KWL | 9 | 59 | 2032-01-27 | — | Active (Vanity) |
| K4KWM | 8 | 57 | 2020-12-08 | 2022-12-09 | Available |
| K4KWN | 10 | 55 | 2004-05-24 | 2006-05-25 | Available |
| K4KWO | 9 | 61 | 2006-05-07 | 2008-05-08 | Available |
| K4KWP | 9 | 61 | 2028-10-07 | — | Active (Vanity) |
| K4KWQ | 9 | 63 | 2027-02-13 | — | Active (Vanity) |
| K4KWR | 10 | 57 | 2027-12-08 | — | Active |
| K4KWS | 10 | 55 | — | — | Available |
| K4KWT | 9 | 53 | 2032-04-12 | — | Active (Vanity) |
| K4KWU | 10 | 57 | — | — | Available |
| K4KWV | 9 | 59 | 2033-01-10 | — | Active (Vanity) |
| K4KWW | 9 | 59 | 2031-11-09 | — | Active (Vanity) |
| K4KWX | 9 | 61 | 2024-07-29 | 2026-07-30 | Available |
| K4KWY | 9 | 63 | — | — | Available |
| K4KWZ | 9 | 61 | 2028-05-11 | — | Active (Vanity) |
| K4KXA | 9 | 57 | 2021-06-07 | 2023-06-08 | Available |
| K4KXB | 9 | 61 | 2003-09-28 | 2005-09-29 | Available |
| K4KXC | 9 | 63 | 2012-07-21 | 2014-07-22 | Available |
| K4KXD | 9 | 59 | 2007-01-02 | 2009-01-03 | Available |
| K4KXE | 9 | 53 | 2035-05-25 | — | Active |
| K4KXF | 9 | 61 | — | — | Available |
| K4KXG | 8 | 61 | — | — | Available |
| K4KXH | 9 | 59 | — | — | Available |
| K4KXI | 10 | 55 | — | — | Available |
| K4KXJ | 10 | 65 | — | — | Available |
| K4KXK | 9 | 61 | 2030-01-14 | — | Active (Vanity) |
| K4KXL | 9 | 61 | 2003-08-31 | 2005-09-01 | Available |
| K4KXM | 8 | 59 | 2030-10-14 | — | Active (Vanity) |
| K4KXN | 10 | 57 | — | — | Available |
| K4KXO | 9 | 63 | 2033-04-27 | — | Active |
| K4KXP | 9 | 63 | 2027-10-21 | — | Active |
| K4KXQ | 9 | 65 | 2021-06-29 | 2023-06-30 | Available |
| K4KXR | 10 | 59 | 2006-05-09 | 2008-05-10 | Available |
| K4KXS | 10 | 57 | — | — | Available |
| K4KXT | 9 | 55 | — | — | Available |
| K4KXU | 10 | 59 | — | — | Available |
| K4KXV | 9 | 61 | 2024-08-10 | 2026-08-11 | Available |
| K4KXW | 9 | 61 | — | — | Available |
| K4KXX | 9 | 63 | 2035-02-20 | — | Active (Vanity) |
| K4KXY | 9 | 65 | 2002-04-09 | 2004-04-10 | Available |
| K4KXZ | 9 | 63 | — | — | Available |
| K4KYA | 9 | 59 | 2008-08-12 | 2010-08-13 | Available |
| K4KYB | 9 | 63 | 2035-12-18 | — | Active (Vanity) |
| K4KYC | 9 | 65 | 2030-02-11 | — | Active (Vanity) |
| K4KYD | 9 | 61 | 2035-06-13 | — | Active (Vanity) |
| K4KYE | 9 | 55 | 2028-10-23 | — | Active (Vanity) |
| K4KYF | 9 | 63 | — | — | Available |
| K4KYG | 8 | 63 | — | — | Available |
| K4KYH | 9 | 61 | — | — | Available |
| K4KYI | 10 | 57 | 1998-09-11 | 2000-09-12 | Available |
| K4KYJ | 10 | 67 | — | — | Available |
| K4KYK | 9 | 63 | 2023-03-11 | 2025-03-12 | Available |
| K4KYL | 9 | 63 | 2035-05-24 | — | Active (Vanity) |
| K4KYM | 8 | 61 | 2022-08-14 | 2024-08-15 | Available |
| K4KYN | 10 | 59 | 2031-01-01 | — | Active (Vanity) |
| K4KYO | 9 | 65 | 2030-02-13 | — | Active |
| K4KYP | 9 | 65 | — | — | Available |