District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KB4CM | 8 | 59 | 2035-01-17 | — | Active (Vanity) |
| KB4CN | 10 | 57 | 1998-11-15 | 2000-11-16 | Available |
| KB4CO | 9 | 63 | 2024-10-04 | 2026-10-05 | Available |
| KB4CP | 9 | 63 | 2034-10-26 | — | Active |
| KB4CQ | 9 | 65 | 2036-07-06 | — | Active (Vanity) |
| KB4CR | 10 | 59 | 2022-01-15 | 2024-01-16 | Available |
| KB4CS | 10 | 57 | 2017-11-17 | 2019-11-18 | Available |
| KB4CT | 9 | 55 | 2018-06-19 | 2020-06-20 | Available |
| KB4CU | 10 | 59 | — | — | Available |
| KB4CV | 9 | 61 | 1998-04-05 | 2000-04-06 | Available |
| KB4CW | 9 | 61 | 2034-09-14 | — | Active |
| KB4CX | 9 | 63 | — | — | Available |
| KB4CY | 9 | 65 | — | — | Available |
| KB4CZ | 9 | 63 | 2035-09-13 | — | Active |
| KB4DA | 9 | 53 | 2014-07-15 | 2016-07-16 | Available |
| KB4DB | 9 | 57 | — | — | Available |
| KB4DC | 9 | 59 | 2016-03-18 | 2018-03-19 | Available |
| KB4DD | 9 | 55 | 2034-03-25 | — | Active (Vanity) |
| KB4DE | 9 | 49 | 2028-08-04 | — | Active |
| KB4DF | 9 | 57 | 2018-09-24 | 2020-09-25 | Available |
| KB4DG | 8 | 57 | 2027-07-28 | — | Active |
| KB4DH | 9 | 55 | 2032-03-24 | — | Active |
| KB4DI | 10 | 51 | 2000-07-04 | 2002-07-05 | Available |
| KB4DJ | 10 | 61 | — | — | Available |
| KB4DK | 9 | 57 | — | — | Available |
| KB4DL | 9 | 57 | 2025-03-27 | — | Active |
| KB4DM | 8 | 55 | 2028-09-18 | — | Active |
| KB4DN | 10 | 53 | — | — | Available |
| KB4DO | 9 | 59 | 2024-05-10 | 2026-05-11 | Available |
| KB4DP | 9 | 59 | 2027-08-26 | — | Active |
| KB4DQ | 9 | 61 | 2024-03-05 | 2026-03-06 | Available |
| KB4DR | 10 | 55 | 2034-03-05 | — | Active (Vanity) |
| KB4DS | 10 | 53 | — | — | Available |
| KB4DT | 9 | 51 | 2029-12-12 | — | Active |
| KB4DU | 10 | 55 | 2034-12-31 | — | Active |
| KB4DV | 9 | 57 | 2015-06-22 | 2017-06-23 | Available |
| KB4DW | 9 | 57 | 2027-05-18 | — | Active (Vanity) |
| KB4DX | 9 | 59 | 2025-12-23 | 2027-12-24 | Canceled (grace period) |
| KB4DY | 9 | 61 | 1998-03-29 | 2000-03-30 | Available |
| KB4DZ | 9 | 59 | — | — | Available |
| KB4EA | 9 | 47 | 1998-06-21 | 2000-06-22 | Available |
| KB4EB | 9 | 51 | 2030-03-26 | — | Active (Vanity) |
| KB4EC | 9 | 53 | 2027-05-23 | — | Active (Vanity) |
| KB4ED | 9 | 49 | 2031-10-16 | — | Active (Vanity) |
| KB4EE | 9 | 43 | 2029-03-22 | — | Active (Vanity) |
| KB4EF | 9 | 51 | 2022-07-27 | 2024-07-28 | Available |
| KB4EG | 8 | 51 | 2008-08-04 | 2010-08-05 | Available |
| KB4EH | 9 | 49 | 1999-03-04 | 2001-03-05 | Available |
| KB4EI | 10 | 45 | 2031-10-05 | — | Active (Vanity) |
| KB4EJ | 10 | 55 | 2027-06-23 | — | Active |
| KB4EK | 9 | 51 | 2008-01-23 | 2010-01-24 | Available |
| KB4EL | 9 | 51 | 1998-06-14 | 2000-06-15 | Available |
| KB4EM | 8 | 49 | 2033-03-23 | — | Active (Vanity) |
| KB4EN | 10 | 47 | 2036-07-10 | — | Active (Vanity) |
| KB4EO | 9 | 53 | 2027-02-01 | — | Active |
| KB4EP | 9 | 53 | 2025-10-24 | — | Active |
| KB4EQ | 9 | 55 | 2030-09-03 | — | Active (Vanity) |
| KB4ER | 10 | 49 | 2031-02-23 | — | Active (Vanity) |
| KB4ES | 10 | 47 | 2035-12-09 | — | Active (Vanity) |
| KB4ET | 9 | 45 | 2031-09-18 | — | Active (Vanity) |
| KB4EU | 10 | 49 | 2014-07-21 | 2016-07-22 | Available |
| KB4EV | 9 | 51 | 2032-08-30 | — | Active (Vanity) |
| KB4EW | 9 | 51 | 2017-04-30 | 2019-05-01 | Available |
| KB4EX | 9 | 53 | 2026-08-03 | — | Active |
| KB4EY | 9 | 55 | 2030-11-17 | — | Active |
| KB4EZ | 9 | 53 | 2004-02-03 | 2006-02-04 | Available |
| KB4FA | 9 | 55 | 2028-04-24 | — | Active |
| KB4FB | 9 | 59 | 2032-10-20 | — | Active |
| KB4FC | 9 | 61 | 1998-05-06 | 2000-05-07 | Available |
| KB4FD | 9 | 57 | 2022-11-03 | 2024-11-04 | Available |
| KB4FE | 9 | 51 | 2013-08-24 | 2015-08-25 | Available |
| KB4FF | 9 | 59 | 2028-01-21 | — | Active |
| KB4FG | 8 | 59 | 2000-12-11 | 2002-12-12 | Available |
| KB4FH | 9 | 57 | 2020-10-09 | 2022-10-10 | Available |
| KB4FI | 10 | 53 | — | — | Available |
| KB4FJ | 10 | 63 | 2031-03-02 | — | Active (Vanity) |
| KB4FK | 9 | 59 | — | — | Available |
| KB4FL | 9 | 59 | 2027-04-21 | — | Active (Vanity) |
| KB4FM | 8 | 57 | 2010-06-13 | 2012-06-14 | Available |
| KB4FN | 10 | 55 | 2018-05-21 | 2020-05-22 | Available |
| KB4FO | 9 | 61 | 2033-06-22 | — | Active (Vanity) |
| KB4FP | 9 | 61 | 2028-06-23 | — | Active |
| KB4FQ | 9 | 63 | 2005-01-15 | 2007-01-16 | Available |
| KB4FR | 10 | 57 | 2032-04-19 | — | Active (Vanity) |
| KB4FS | 10 | 55 | 2031-09-11 | — | Active (Vanity) |
| KB4FT | 9 | 53 | 2015-09-08 | 2017-09-09 | Available |
| KB4FU | 10 | 57 | — | — | Available |
| KB4FV | 9 | 59 | 2034-02-08 | — | Active (Vanity) |
| KB4FW | 9 | 59 | 2007-07-06 | 2009-07-07 | Available |
| KB4FX | 9 | 61 | 2030-01-24 | — | Active (Vanity) |
| KB4FY | 9 | 63 | 2008-04-14 | 2010-04-15 | Available |
| KB4FZ | 9 | 61 | — | — | Available |
| KB4GA | 8 | 55 | 2030-07-02 | — | Active (Vanity) |
| KB4GB | 8 | 59 | 2026-04-09 | — | Active |
| KB4GC | 8 | 61 | — | — | Available |
| KB4GD | 8 | 57 | 2006-06-28 | 2008-06-29 | Available |
| KB4GE | 8 | 51 | 2026-05-17 | — | Active |
| KB4GF | 8 | 59 | 2008-10-27 | 2010-10-28 | Available |
| KB4GG | 7 | 59 | 2014-01-18 | 2016-01-19 | Available |
| KB4GH | 8 | 57 | 2030-08-21 | — | Active (Vanity) |