District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KB4OA | 9 | 57 | — | — | Available |
| KB4OB | 9 | 61 | 2022-03-31 | 2024-04-01 | Available |
| KB4OC | 9 | 63 | — | — | Available |
| KB4OD | 9 | 59 | — | — | Available |
| KB4OE | 9 | 53 | — | — | Available |
| KB4OF | 9 | 61 | 2024-04-12 | 2026-04-13 | Available |
| KB4OG | 8 | 61 | — | — | Available |
| KB4OH | 9 | 59 | — | — | Available |
| KB4OI | 10 | 55 | 2028-09-14 | — | Active (Vanity) |
| KB4OJ | 10 | 65 | 2008-02-05 | 2010-02-06 | Available |
| KB4OK | 9 | 61 | 2030-10-06 | — | Active (Vanity) |
| KB4OL | 9 | 61 | — | — | Available |
| KB4OM | 8 | 59 | 2034-04-12 | — | Active |
| KB4ON | 10 | 57 | 2003-08-31 | 2005-09-01 | Available |
| KB4OO | 9 | 63 | — | — | Available |
| KB4OP | 9 | 63 | 2034-03-01 | — | Active |
| KB4OQ | 9 | 65 | 2034-03-15 | — | Active |
| KB4OR | 10 | 59 | 2030-05-08 | — | Active |
| KB4OS | 10 | 57 | 2023-02-16 | 2025-02-17 | Available |
| KB4OT | 9 | 55 | 2033-01-07 | — | Active |
| KB4OU | 10 | 59 | — | — | Available |
| KB4OV | 9 | 61 | — | — | Available |
| KB4OW | 9 | 61 | — | — | Available |
| KB4OX | 9 | 63 | 2000-06-23 | 2002-06-24 | Available |
| KB4OY | 9 | 65 | — | — | Available |
| KB4OZ | 9 | 63 | 2018-02-15 | 2020-02-16 | Available |
| KB4PA | 9 | 57 | 2029-08-03 | — | Active |
| KB4PB | 9 | 61 | — | — | Available |
| KB4PC | 9 | 63 | — | — | Available |
| KB4PD | 9 | 59 | — | — | Available |
| KB4PE | 9 | 53 | — | — | Available |
| KB4PF | 9 | 61 | 2024-03-05 | 2026-03-06 | Available |
| KB4PG | 8 | 61 | 2002-08-02 | 2004-08-03 | Available |
| KB4PH | 9 | 59 | 2034-09-17 | — | Active |
| KB4PI | 10 | 55 | 2028-08-24 | — | Active |
| KB4PJ | 10 | 65 | — | — | Available |
| KB4PK | 9 | 61 | 2024-04-26 | 2026-04-27 | Available |
| KB4PL | 9 | 61 | — | — | Available |
| KB4PM | 8 | 59 | 2024-05-17 | 2026-05-18 | Available |
| KB4PN | 10 | 57 | — | — | Available |
| KB4PO | 9 | 63 | — | — | Available |
| KB4PP | 9 | 63 | 2010-01-30 | 2012-01-31 | Available |
| KB4PQ | 9 | 65 | 2004-07-13 | 2006-07-14 | Available |
| KB4PR | 10 | 59 | 2028-09-22 | — | Active |
| KB4PS | 10 | 57 | 2034-09-23 | — | Active |
| KB4PT | 9 | 55 | 2035-02-25 | — | Active (Vanity) |
| KB4PU | 10 | 59 | — | — | Available |
| KB4PV | 9 | 61 | — | — | Available |
| KB4PW | 9 | 61 | 2024-08-23 | 2026-08-24 | Available |
| KB4PX | 9 | 63 | 2034-04-12 | — | Active |
| KB4PY | 9 | 65 | 2024-04-12 | 2026-04-13 | Available |
| KB4PZ | 9 | 63 | — | — | Available |
| KB4QA | 9 | 59 | 2034-04-12 | — | Active |
| KB4QB | 9 | 63 | — | — | Available |
| KB4QC | 9 | 65 | 2015-03-24 | 2017-03-25 | Available |
| KB4QD | 9 | 61 | — | — | Available |
| KB4QE | 9 | 55 | 2024-03-05 | 2026-03-06 | Available |
| KB4QF | 9 | 63 | 2025-02-03 | — | Active |
| KB4QG | 8 | 63 | — | — | Available |
| KB4QH | 9 | 61 | — | — | Available |
| KB4QI | 10 | 57 | 2025-09-01 | — | Active |
| KB4QJ | 10 | 67 | 2007-11-10 | 2009-11-11 | Available |
| KB4QK | 9 | 63 | — | — | Available |
| KB4QL | 9 | 63 | — | — | Available |
| KB4QM | 8 | 61 | — | — | Available |
| KB4QN | 10 | 59 | — | — | Available |
| KB4QO | 9 | 65 | — | — | Available |
| KB4QP | 9 | 65 | 2020-08-15 | 2022-08-16 | Available |
| KB4QQ | 9 | 67 | — | — | Available |
| KB4QR | 10 | 61 | — | — | Available |
| KB4QS | 10 | 59 | 2028-06-17 | — | Active |
| KB4QT | 9 | 57 | 2024-08-22 | 2026-08-23 | Available |
| KB4QU | 10 | 61 | — | — | Available |
| KB4QV | 9 | 63 | 2000-05-22 | 2002-05-23 | Available |
| KB4QW | 9 | 63 | 2003-07-06 | 2005-07-07 | Available |
| KB4QX | 9 | 65 | 2001-09-22 | 2003-09-23 | Available |
| KB4QY | 9 | 67 | 2024-03-22 | 2026-03-23 | Available |
| KB4QZ | 9 | 65 | 2006-01-29 | 2008-01-30 | Available |
| KB4RA | 10 | 53 | 2034-04-05 | — | Active |
| KB4RB | 10 | 57 | 2036-09-29 | — | Active |
| KB4RC | 10 | 59 | 2031-09-28 | — | Active (Vanity) |
| KB4RD | 10 | 55 | 2025-11-09 | — | Active |
| KB4RE | 10 | 49 | — | — | Available |
| KB4RF | 10 | 57 | 2015-05-12 | 2017-05-13 | Available |
| KB4RG | 9 | 57 | 2023-07-14 | 2025-07-15 | Available |
| KB4RH | 10 | 55 | 2010-08-07 | 2012-08-08 | Available |
| KB4RI | 11 | 51 | — | — | Available |
| KB4RJ | 11 | 61 | 1999-06-06 | 2001-06-07 | Available |
| KB4RK | 10 | 57 | 2031-02-27 | — | Active (Vanity) |
| KB4RL | 10 | 57 | 2024-07-14 | 2026-07-15 | Available |
| KB4RM | 9 | 55 | 2030-02-11 | — | Active (Vanity) |
| KB4RN | 11 | 53 | 2034-01-18 | — | Active (Vanity) |
| KB4RO | 10 | 59 | — | — | Available |
| KB4RP | 10 | 59 | — | — | Available |
| KB4RQ | 10 | 61 | 2029-05-14 | — | Active |
| KB4RR | 11 | 55 | 2028-11-10 | — | Active (Vanity) |
| KB4RS | 11 | 53 | 2031-11-16 | — | Active (Vanity) |
| KB4RT | 10 | 51 | 2032-10-26 | — | Active |
| KB4RU | 11 | 55 | 2033-03-15 | — | Active (Vanity) |
| KB4RV | 10 | 57 | 2022-06-23 | 2024-06-24 | Available |