District 4
2x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KB4USW | 13 | 65 | 2006-11-03 | 2008-11-04 | Available |
| KB4USX | 13 | 67 | — | — | Available |
| KB4USY | 13 | 69 | — | — | Available |
| KB4USZ | 13 | 67 | — | — | Available |
| KB4UTA | 12 | 59 | — | — | Available |
| KB4UTB | 12 | 63 | 2027-03-17 | — | Active |
| KB4UTC | 12 | 65 | 2018-05-01 | 2020-05-02 | Available |
| KB4UTD | 12 | 61 | — | — | Available |
| KB4UTE | 12 | 55 | — | — | Available |
| KB4UTF | 12 | 63 | 2006-07-30 | 2008-07-31 | Available |
| KB4UTG | 11 | 63 | — | — | Available |
| KB4UTH | 12 | 61 | 2006-12-18 | 2008-12-19 | Available |
| KB4UTI | 13 | 57 | — | — | Available |
| KB4UTJ | 13 | 67 | 2027-07-31 | — | Active |
| KB4UTK | 12 | 63 | — | — | Available |
| KB4UTL | 12 | 63 | — | — | Available |
| KB4UTM | 11 | 61 | — | — | Available |
| KB4UTN | 13 | 59 | 2007-01-28 | 2009-01-29 | Available |
| KB4UTO | 12 | 65 | — | — | Available |
| KB4UTP | 12 | 65 | — | — | Available |
| KB4UTQ | 12 | 67 | — | — | Available |
| KB4UTR | 13 | 61 | 2006-05-23 | 2008-05-24 | Available |
| KB4UTS | 13 | 59 | 1998-05-17 | 2000-05-18 | Available |
| KB4UTT | 12 | 57 | — | — | Available |
| KB4UTU | 13 | 61 | — | — | Available |
| KB4UTV | 12 | 63 | 2002-12-13 | 2004-12-14 | Available |
| KB4UTW | 12 | 63 | 2008-01-08 | 2010-01-09 | Available |
| KB4UTX | 12 | 65 | — | — | Available |
| KB4UTY | 12 | 67 | 2003-08-10 | 2005-08-11 | Available |
| KB4UTZ | 12 | 65 | 2031-04-23 | — | Active |
| KB4UUA | 13 | 63 | 2036-07-03 | — | Active |
| KB4UUB | 13 | 67 | — | — | Available |
| KB4UUC | 13 | 69 | — | — | Available |
| KB4UUD | 13 | 65 | 2006-07-29 | 2008-07-30 | Available |
| KB4UUE | 13 | 59 | — | — | Available |
| KB4UUF | 13 | 67 | 2028-07-24 | — | Active |
| KB4UUG | 12 | 67 | — | — | Available |
| KB4UUH | 13 | 65 | — | — | Available |
| KB4UUI | 14 | 61 | 2006-05-29 | 2008-05-30 | Available |
| KB4UUJ | 14 | 71 | — | — | Available |
| KB4UUK | 13 | 67 | 2004-05-21 | 2006-05-22 | Available |
| KB4UUL | 13 | 67 | — | — | Available |
| KB4UUM | 12 | 65 | — | — | Available |
| KB4UUN | 14 | 63 | 2025-07-16 | — | Active |
| KB4UUO | 13 | 69 | — | — | Available |
| KB4UUP | 13 | 69 | 2016-06-03 | 2018-06-04 | Available |
| KB4UUQ | 13 | 71 | — | — | Available |
| KB4UUR | 14 | 65 | 2028-10-18 | — | Active |
| KB4UUS | 14 | 63 | — | — | Available |
| KB4UUT | 13 | 61 | 2006-06-07 | 2008-06-08 | Available |
| KB4UUU | 14 | 65 | 1997-10-27 | 1999-10-28 | Available |
| KB4UUV | 13 | 67 | 2026-08-22 | — | Active |
| KB4UUW | 13 | 67 | 2036-08-21 | — | Active |
| KB4UUX | 13 | 69 | 2008-09-22 | 2010-09-23 | Available |
| KB4UUY | 13 | 71 | — | — | Available |
| KB4UUZ | 13 | 69 | 2032-04-28 | — | Active |
| KB4UVA | 12 | 65 | 2026-08-07 | — | Active |
| KB4UVB | 12 | 69 | 1997-12-01 | 1999-12-02 | Available |
| KB4UVC | 12 | 71 | — | — | Available |
| KB4UVD | 12 | 67 | — | — | Available |
| KB4UVE | 12 | 61 | — | — | Available |
| KB4UVF | 12 | 69 | — | — | Available |
| KB4UVG | 11 | 69 | — | — | Available |
| KB4UVH | 12 | 67 | 1998-02-09 | 2000-02-10 | Available |
| KB4UVI | 13 | 63 | 2017-05-27 | 2019-05-28 | Available |
| KB4UVJ | 13 | 73 | 2032-04-28 | — | Active |
| KB4UVK | 12 | 69 | 2007-11-20 | 2009-11-21 | Available |
| KB4UVL | 12 | 69 | — | — | Available |
| KB4UVM | 11 | 67 | — | — | Available |
| KB4UVN | 13 | 65 | 2010-05-04 | 2012-05-05 | Available |
| KB4UVO | 12 | 71 | 2006-05-29 | 2008-05-30 | Available |
| KB4UVP | 12 | 71 | — | — | Available |
| KB4UVQ | 12 | 73 | — | — | Available |
| KB4UVR | 13 | 67 | — | — | Available |
| KB4UVS | 13 | 65 | — | — | Available |
| KB4UVT | 12 | 63 | 2016-11-22 | 2018-11-23 | Available |
| KB4UVU | 13 | 67 | — | — | Available |
| KB4UVV | 12 | 69 | 2031-06-22 | — | Active |
| KB4UVW | 12 | 69 | 2006-07-31 | 2008-08-01 | Available |
| KB4UVX | 12 | 71 | — | — | Available |
| KB4UVY | 12 | 73 | — | — | Available |
| KB4UVZ | 12 | 71 | — | — | Available |
| KB4UWA | 12 | 65 | — | — | Available |
| KB4UWB | 12 | 69 | 2006-05-24 | 2008-05-25 | Available |
| KB4UWC | 12 | 71 | — | — | Available |
| KB4UWD | 12 | 67 | — | — | Available |
| KB4UWE | 12 | 61 | — | — | Available |
| KB4UWF | 12 | 69 | — | — | Available |
| KB4UWG | 11 | 69 | — | — | Available |
| KB4UWH | 12 | 67 | — | — | Available |
| KB4UWI | 13 | 63 | — | — | Available |
| KB4UWJ | 13 | 73 | — | — | Available |
| KB4UWK | 12 | 69 | — | — | Available |
| KB4UWL | 12 | 69 | — | — | Available |
| KB4UWM | 11 | 67 | — | — | Available |
| KB4UWN | 13 | 65 | — | — | Available |
| KB4UWO | 12 | 71 | 2006-06-12 | 2008-06-13 | Available |
| KB4UWP | 12 | 71 | 2006-06-12 | 2008-06-13 | Available |
| KB4UWQ | 12 | 73 | — | — | Available |
| KB4UWR | 13 | 67 | — | — | Available |