District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KR4SI | 12 | 47 | 2034-05-31 | — | Active |
| KR4SJ | 12 | 57 | 2034-05-31 | — | Active |
| KR4SK | 11 | 53 | 2034-05-31 | — | Active |
| KR4SL | 11 | 53 | 2013-01-01 | 2015-01-02 | Available |
| KR4SM | 10 | 51 | 2014-05-31 | 2016-06-01 | Available |
| KR4SN | 12 | 49 | 2034-05-31 | — | Active |
| KR4SO | 11 | 55 | 2034-12-24 | — | Active |
| KR4SP | 11 | 55 | 2024-05-31 | 2026-06-01 | Available |
| KR4SQ | 11 | 57 | 2008-12-12 | 2010-12-13 | Available |
| KR4SR | 12 | 51 | 2036-09-29 | — | Active (Vanity) |
| KR4SS | 12 | 49 | 2024-05-31 | 2026-06-01 | Available |
| KR4ST | 11 | 47 | 2034-05-31 | — | Active |
| KR4SU | 12 | 51 | 2034-05-31 | — | Active |
| KR4SV | 11 | 53 | 2024-05-31 | 2026-06-01 | Available |
| KR4SW | 11 | 53 | 2024-05-31 | 2026-06-01 | Available |
| KR4SX | 11 | 55 | 2014-05-31 | 2016-06-01 | Available |
| KR4SY | 11 | 57 | — | — | Available |
| KR4SZ | 11 | 55 | 2034-10-04 | — | Active |
| KR4TA | 10 | 47 | 2036-01-07 | — | Active (Vanity) |
| KR4TB | 10 | 51 | 2004-06-15 | 2006-06-16 | Available |
| KR4TC | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| KR4TD | 10 | 49 | 2008-10-29 | 2010-10-30 | Available |
| KR4TE | 10 | 43 | — | — | Available |
| KR4TF | 10 | 51 | 2000-05-31 | 2002-06-01 | Available |
| KR4TG | 9 | 51 | 2034-05-29 | — | Active |
| KR4TH | 10 | 49 | 2024-06-17 | 2026-06-18 | Available |
| KR4TI | 11 | 45 | 2033-02-02 | — | Active |
| KR4TJ | 11 | 55 | 2036-03-07 | — | Active (Vanity) |
| KR4TK | 10 | 51 | 2033-08-24 | — | Active |
| KR4TL | 10 | 51 | 2024-04-29 | 2026-04-30 | Available |
| KR4TM | 9 | 49 | 2004-03-08 | 2006-03-09 | Available |
| KR4TN | 11 | 47 | 2024-05-31 | — | Active |
| KR4TO | 10 | 53 | 1998-02-25 | 2000-02-26 | Available |
| KR4TP | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| KR4TQ | 10 | 55 | — | — | Available |
| KR4TR | 11 | 49 | — | — | Available |
| KR4TS | 11 | 47 | 2004-06-28 | 2006-06-29 | Available |
| KR4TT | 10 | 45 | 2034-05-03 | — | Active |
| KR4TU | 11 | 49 | 2006-05-12 | 2008-05-13 | Available |
| KR4TV | 10 | 51 | 2024-03-22 | 2026-03-23 | Available |
| KR4TW | 10 | 51 | 2023-08-31 | 2025-09-01 | Available |
| KR4TX | 10 | 53 | 2013-09-14 | 2015-09-15 | Available |
| KR4TY | 10 | 55 | 2013-01-26 | 2015-01-27 | Available |
| KR4TZ | 10 | 53 | 2035-03-29 | — | Active |
| KR4UA | 11 | 51 | 2023-08-24 | 2025-08-25 | Available |
| KR4UB | 11 | 55 | 2034-02-22 | — | Active |
| KR4UC | 11 | 57 | — | — | Available |
| KR4UD | 11 | 53 | 2034-03-08 | — | Active |
| KR4UE | 11 | 47 | — | — | Available |
| KR4UF | 11 | 55 | 2002-03-26 | 2004-03-27 | Available |
| KR4UG | 10 | 55 | 2034-03-01 | — | Active |
| KR4UH | 11 | 53 | 2004-04-12 | 2006-04-13 | Available |
| KR4UI | 12 | 49 | — | — | Available |
| KR4UJ | 12 | 59 | — | — | Available |
| KR4UK | 11 | 55 | 2026-07-08 | — | Active |
| KR4UL | 11 | 55 | 2034-04-24 | — | Active |
| KR4UM | 10 | 53 | 2004-01-04 | 2006-01-05 | Available |
| KR4UN | 12 | 51 | 2024-07-09 | 2026-07-10 | Available |
| KR4UO | 11 | 57 | 2034-03-08 | — | Active |
| KR4UP | 11 | 57 | 2015-08-02 | 2017-08-03 | Available |
| KR4UQ | 11 | 59 | 2014-01-25 | 2016-01-26 | Available |
| KR4UR | 12 | 53 | 2033-10-05 | — | Active |
| KR4US | 12 | 51 | 2032-02-25 | — | Active |
| KR4UT | 11 | 49 | 2014-03-29 | 2016-03-30 | Available |
| KR4UU | 12 | 53 | 2033-06-22 | — | Active |
| KR4UV | 11 | 55 | 2003-02-02 | 2005-02-03 | Available |
| KR4UW | 11 | 55 | 2013-11-09 | 2015-11-10 | Available |
| KR4UX | 11 | 57 | 2004-07-13 | 2006-07-14 | Available |
| KR4UY | 11 | 59 | — | — | Available |
| KR4UZ | 11 | 57 | — | — | Available |
| KR4VA | 10 | 53 | 2033-06-22 | — | Active |
| KR4VB | 10 | 57 | 2021-10-01 | 2023-10-02 | Available |
| KR4VC | 10 | 59 | 2024-03-05 | 2026-03-06 | Available |
| KR4VD | 10 | 55 | 2013-11-09 | 2015-11-10 | Available |
| KR4VE | 10 | 49 | 2003-12-21 | 2005-12-22 | Available |
| KR4VF | 10 | 57 | — | — | Available |
| KR4VG | 9 | 57 | 2013-10-23 | 2015-10-24 | Available |
| KR4VH | 10 | 55 | 2030-09-11 | — | Active |
| KR4VI | 11 | 51 | — | — | Available |
| KR4VJ | 11 | 61 | 2027-07-22 | — | Active |
| KR4VK | 10 | 57 | 2023-06-08 | 2025-06-09 | Available |
| KR4VL | 10 | 57 | 2034-09-09 | — | Active |
| KR4VM | 9 | 55 | 2004-07-14 | 2006-07-15 | Available |
| KR4VN | 11 | 53 | — | — | Available |
| KR4VO | 10 | 59 | 2035-04-30 | — | Active |
| KR4VP | 10 | 59 | 2028-08-04 | — | Active (Vanity) |
| KR4VQ | 10 | 61 | — | — | Available |
| KR4VR | 11 | 55 | 2000-08-29 | 2002-08-30 | Available |
| KR4VS | 11 | 53 | 2034-07-15 | — | Active |
| KR4VT | 10 | 51 | 2031-10-22 | — | Active |
| KR4VU | 11 | 55 | 2026-09-24 | — | Active |
| KR4VV | 10 | 57 | — | — | Available |
| KR4VW | 10 | 57 | 2023-02-16 | 2025-02-17 | Available |
| KR4VX | 10 | 59 | — | — | Available |
| KR4VY | 10 | 61 | — | — | Available |
| KR4VZ | 10 | 59 | — | — | Available |
| KR4WA | 10 | 53 | 2025-04-06 | — | Active |
| KR4WB | 10 | 57 | 2033-08-24 | — | Active |
| KR4WC | 10 | 59 | 2004-07-15 | 2006-07-16 | Available |
| KR4WD | 10 | 55 | 2033-12-21 | — | Active |