District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4FUA | 10 | 53 | — | — | Available |
| K4FUB | 10 | 57 | — | — | Available |
| K4FUC | 10 | 59 | — | — | Available |
| K4FUD | 10 | 55 | 2024-06-21 | 2026-06-22 | Available |
| K4FUE | 10 | 49 | — | — | Available |
| K4FUF | 10 | 57 | 2008-04-30 | 2010-05-01 | Available |
| K4FUG | 9 | 57 | — | — | Available |
| K4FUH | 10 | 55 | — | — | Available |
| K4FUI | 11 | 51 | — | — | Available |
| K4FUJ | 11 | 61 | 2028-12-29 | — | Active (Vanity) |
| K4FUK | 10 | 57 | 2031-06-02 | — | Active (Vanity) |
| K4FUL | 10 | 57 | — | — | Available |
| K4FUM | 9 | 55 | 2030-12-31 | — | Active |
| K4FUN | 11 | 53 | 2026-11-04 | — | Active (Vanity) |
| K4FUO | 10 | 59 | 2025-04-27 | — | Active |
| K4FUP | 10 | 59 | 2007-11-04 | 2009-11-05 | Available |
| K4FUQ | 10 | 61 | — | — | Available |
| K4FUR | 11 | 55 | 2030-07-28 | — | Active (Vanity) |
| K4FUS | 11 | 53 | 2029-09-19 | — | Active (Vanity) |
| K4FUT | 10 | 51 | — | — | Available |
| K4FUU | 11 | 55 | 2036-01-24 | — | Active (Vanity) |
| K4FUV | 10 | 57 | 2028-11-25 | — | Active |
| K4FUW | 10 | 57 | — | — | Available |
| K4FUX | 10 | 59 | — | — | Available |
| K4FUY | 10 | 61 | 2032-08-11 | — | Active |
| K4FUZ | 10 | 59 | 2036-07-15 | — | Active (Vanity) |
| K4FVA | 9 | 55 | — | — | Available |
| K4FVB | 9 | 59 | 2014-10-25 | 2016-10-26 | Available |
| K4FVC | 9 | 61 | — | — | Available |
| K4FVD | 9 | 57 | — | — | Available |
| K4FVE | 9 | 51 | — | — | Available |
| K4FVF | 9 | 59 | 1998-03-22 | 2000-03-23 | Available |
| K4FVG | 8 | 59 | 2004-07-16 | 2006-07-17 | Available |
| K4FVH | 9 | 57 | — | — | Available |
| K4FVI | 10 | 53 | 2005-11-28 | 2007-11-29 | Available |
| K4FVJ | 10 | 63 | 2026-11-25 | — | Active (Vanity) |
| K4FVK | 9 | 59 | — | — | Available |
| K4FVL | 9 | 59 | — | — | Available |
| K4FVM | 8 | 57 | — | — | Available |
| K4FVN | 10 | 55 | 2016-01-17 | 2018-01-18 | Available |
| K4FVO | 9 | 61 | — | — | Available |
| K4FVP | 9 | 61 | — | — | Available |
| K4FVQ | 9 | 63 | 2016-02-09 | 2018-02-10 | Available |
| K4FVR | 10 | 57 | — | — | Available |
| K4FVS | 10 | 55 | — | — | Available |
| K4FVT | 9 | 53 | — | — | Available |
| K4FVU | 10 | 57 | — | — | Available |
| K4FVV | 9 | 59 | 2005-04-17 | 2007-04-18 | Available |
| K4FVW | 9 | 59 | 2009-05-15 | 2011-05-16 | Available |
| K4FVX | 9 | 61 | 2024-03-29 | 2026-03-30 | Available |
| K4FVY | 9 | 63 | — | — | Available |
| K4FVZ | 9 | 61 | — | — | Available |
| K4FWA | 9 | 55 | 2006-11-22 | 2008-11-23 | Available |
| K4FWB | 9 | 59 | 2027-05-19 | — | Active (Vanity) |
| K4FWC | 9 | 61 | 2033-08-15 | — | Active (Vanity) |
| K4FWD | 9 | 57 | 2028-05-04 | — | Active (Vanity) |
| K4FWE | 9 | 51 | — | — | Available |
| K4FWF | 9 | 59 | — | — | Available |
| K4FWG | 8 | 59 | 2018-01-22 | 2020-01-23 | Available |
| K4FWH | 9 | 57 | 2027-11-04 | — | Active |
| K4FWI | 10 | 53 | — | — | Available |
| K4FWJ | 10 | 63 | 2031-06-09 | — | Active |
| K4FWK | 9 | 59 | 2033-08-08 | — | Active (Vanity) |
| K4FWL | 9 | 59 | 2021-06-22 | 2023-06-23 | Available |
| K4FWM | 8 | 57 | 2005-10-23 | 2007-10-24 | Available |
| K4FWN | 10 | 55 | — | — | Available |
| K4FWO | 9 | 61 | 2033-09-26 | — | Active (Vanity) |
| K4FWP | 9 | 61 | — | — | Available |
| K4FWQ | 9 | 63 | — | — | Available |
| K4FWR | 10 | 57 | 2022-01-31 | 2024-02-01 | Available |
| K4FWS | 10 | 55 | 2027-11-03 | — | Active (Vanity) |
| K4FWT | 9 | 53 | — | — | Available |
| K4FWU | 10 | 57 | — | — | Available |
| K4FWV | 9 | 59 | — | — | Available |
| K4FWW | 9 | 59 | 2015-03-21 | 2017-03-22 | Available |
| K4FWX | 9 | 61 | 2017-11-19 | 2019-11-20 | Available |
| K4FWY | 9 | 63 | — | — | Available |
| K4FWZ | 9 | 61 | — | — | Available |
| K4FXA | 9 | 57 | — | — | Available |
| K4FXB | 9 | 61 | 2033-06-22 | — | Active (Vanity) |
| K4FXC | 9 | 63 | 2032-04-15 | — | Active (Vanity) |
| K4FXD | 9 | 59 | 2022-04-26 | 2024-04-27 | Available |
| K4FXE | 9 | 53 | — | — | Available |
| K4FXF | 9 | 61 | 2014-05-24 | 2016-05-25 | Available |
| K4FXG | 8 | 61 | 2033-04-18 | — | Active (Vanity) |
| K4FXH | 9 | 59 | — | — | Available |
| K4FXI | 10 | 55 | 2007-02-21 | 2009-02-22 | Available |
| K4FXJ | 10 | 65 | — | — | Available |
| K4FXK | 9 | 61 | — | — | Available |
| K4FXL | 9 | 61 | — | — | Available |
| K4FXM | 8 | 59 | — | — | Available |
| K4FXN | 10 | 57 | 2018-11-24 | 2020-11-25 | Available |
| K4FXO | 9 | 63 | — | — | Available |
| K4FXP | 9 | 63 | 2009-03-22 | 2011-03-23 | Available |
| K4FXQ | 9 | 65 | 2025-11-01 | — | Active |
| K4FXR | 10 | 59 | 2027-09-01 | — | Active (Vanity) |
| K4FXS | 10 | 57 | — | — | Available |
| K4FXT | 9 | 55 | — | — | Available |
| K4FXU | 10 | 59 | 2005-09-07 | 2007-09-08 | Available |
| K4FXV | 9 | 61 | 2007-01-09 | 2009-01-10 | Available |