District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KF4KA | 9 | 55 | 2013-02-23 | 2015-02-24 | Available |
| KF4KB | 9 | 59 | — | — | Available |
| KF4KC | 9 | 61 | 2013-01-09 | 2015-01-10 | Available |
| KF4KD | 9 | 57 | 2027-04-09 | — | Active |
| KF4KE | 9 | 51 | 1997-11-03 | 1999-11-04 | Available |
| KF4KF | 9 | 59 | 2032-04-01 | — | Active (Vanity) |
| KF4KG | 8 | 59 | 2000-02-08 | 2002-02-09 | Available |
| KF4KH | 9 | 57 | — | — | Available |
| KF4KI | 10 | 53 | 2016-09-27 | 2018-09-28 | Available |
| KF4KJ | 10 | 63 | — | — | Available |
| KF4KK | 9 | 59 | 2030-03-05 | — | Active |
| KF4KL | 9 | 59 | 2000-12-16 | 2002-12-17 | Available |
| KF4KM | 8 | 57 | 2032-04-21 | — | Active |
| KF4KN | 10 | 55 | 2028-03-27 | — | Active |
| KF4KO | 9 | 61 | — | — | Available |
| KF4KP | 9 | 61 | — | — | Available |
| KF4KQ | 9 | 63 | 2013-10-12 | 2015-10-13 | Available |
| KF4KR | 10 | 57 | — | — | Available |
| KF4KS | 10 | 55 | 2008-01-26 | 2010-01-27 | Available |
| KF4KT | 9 | 53 | 2000-01-04 | 2002-01-05 | Available |
| KF4KU | 10 | 57 | — | — | Available |
| KF4KV | 9 | 59 | 2002-04-04 | 2004-04-05 | Available |
| KF4KW | 9 | 59 | 2011-08-17 | 2013-08-18 | Available |
| KF4KX | 9 | 61 | 2027-12-10 | — | Active |
| KF4KY | 9 | 63 | 2017-08-22 | 2019-08-23 | Available |
| KF4KZ | 9 | 61 | 2028-04-20 | — | Active |
| KF4LA | 9 | 55 | — | — | Available |
| KF4LB | 9 | 59 | 2016-12-10 | 2018-12-11 | Available |
| KF4LC | 9 | 61 | 2007-05-27 | 2009-05-28 | Available |
| KF4LD | 9 | 57 | 2017-03-03 | 2019-03-04 | Available |
| KF4LE | 9 | 51 | — | — | Available |
| KF4LF | 9 | 59 | — | — | Available |
| KF4LG | 8 | 59 | 2030-08-07 | — | Active |
| KF4LH | 9 | 57 | — | — | Available |
| KF4LI | 10 | 53 | 2007-04-16 | 2009-04-17 | Available |
| KF4LJ | 10 | 63 | — | — | Available |
| KF4LK | 9 | 59 | 2019-11-19 | 2021-11-20 | Available |
| KF4LL | 9 | 59 | 2034-05-24 | — | Active |
| KF4LM | 8 | 57 | 2017-01-10 | 2019-01-11 | Available |
| KF4LN | 10 | 55 | — | — | Available |
| KF4LO | 9 | 61 | 2011-05-08 | 2013-05-09 | Available |
| KF4LP | 9 | 61 | 2018-11-25 | 2020-11-26 | Available |
| KF4LQ | 9 | 63 | 2001-05-04 | 2003-05-05 | Available |
| KF4LR | 10 | 57 | 2024-03-05 | 2026-03-06 | Available |
| KF4LS | 10 | 55 | — | — | Available |
| KF4LT | 9 | 53 | 2007-09-16 | 2009-09-17 | Available |
| KF4LU | 10 | 57 | — | — | Available |
| KF4LV | 9 | 59 | — | — | Available |
| KF4LW | 9 | 59 | 2017-04-18 | 2019-04-19 | Available |
| KF4LX | 9 | 61 | 2036-03-29 | — | Active |
| KF4LY | 9 | 63 | — | — | Available |
| KF4LZ | 9 | 61 | 2025-07-16 | 2027-07-17 | Canceled (grace period) |
| KF4MA | 8 | 53 | 2028-07-02 | — | Active |
| KF4MB | 8 | 57 | 1999-05-02 | 2001-05-03 | Available |
| KF4MC | 8 | 59 | 2036-09-04 | — | Active |
| KF4MD | 8 | 55 | 2036-09-04 | — | Active |
| KF4ME | 8 | 49 | 2030-11-09 | — | Active (Vanity) |
| KF4MF | 8 | 57 | 2030-12-27 | — | Active |
| KF4MG | 7 | 57 | 1998-03-01 | 2000-03-02 | Available |
| KF4MH | 8 | 55 | 2020-05-29 | 2022-05-30 | Available |
| KF4MI | 9 | 51 | 2002-03-03 | 2004-03-04 | Available |
| KF4MJ | 9 | 61 | — | — | Available |
| KF4MK | 8 | 57 | 2031-08-28 | — | Active (Vanity) |
| KF4ML | 8 | 57 | 2028-07-20 | — | Active |
| KF4MM | 7 | 55 | 2036-04-03 | — | Active |
| KF4MN | 9 | 53 | 1999-03-21 | 2001-03-22 | Available |
| KF4MO | 8 | 59 | 2008-01-09 | 2010-01-10 | Available |
| KF4MP | 8 | 59 | — | — | Available |
| KF4MQ | 8 | 61 | 2001-07-14 | 2003-07-15 | Available |
| KF4MR | 9 | 55 | 2001-02-26 | 2003-02-27 | Available |
| KF4MS | 9 | 53 | 2035-08-25 | — | Active |
| KF4MT | 8 | 51 | 2028-03-24 | — | Active |
| KF4MU | 9 | 55 | — | — | Available |
| KF4MV | 8 | 57 | — | — | Available |
| KF4MW | 8 | 57 | — | — | Available |
| KF4MX | 8 | 59 | 2030-01-22 | — | Active |
| KF4MY | 8 | 61 | 2027-12-22 | — | Active |
| KF4MZ | 8 | 59 | 2001-02-26 | 2003-02-27 | Available |
| KF4NA | 10 | 51 | 2029-11-14 | — | Active |
| KF4NB | 10 | 55 | 2029-01-04 | — | Active (Vanity) |
| KF4NC | 10 | 57 | 2030-07-14 | — | Active (Vanity) |
| KF4ND | 10 | 53 | — | — | Available |
| KF4NE | 10 | 47 | 2010-02-20 | 2012-02-21 | Available |
| KF4NF | 10 | 55 | — | — | Available |
| KF4NG | 9 | 55 | 2028-05-14 | — | Active |
| KF4NH | 10 | 53 | 2019-02-12 | 2021-02-13 | Available |
| KF4NI | 11 | 49 | 2028-04-28 | — | Active (Vanity) |
| KF4NJ | 11 | 59 | 1998-12-15 | 2000-12-16 | Available |
| KF4NK | 10 | 55 | — | — | Available |
| KF4NL | 10 | 55 | — | — | Available |
| KF4NM | 9 | 53 | 1999-01-31 | 2001-02-01 | Available |
| KF4NN | 11 | 51 | 2023-04-27 | 2025-04-28 | Available |
| KF4NO | 10 | 57 | 2018-04-22 | 2020-04-23 | Available |
| KF4NP | 10 | 57 | 2007-02-26 | 2009-02-27 | Available |
| KF4NQ | 10 | 59 | 2008-05-08 | 2010-05-09 | Available |
| KF4NR | 11 | 53 | 2018-04-17 | 2020-04-18 | Available |
| KF4NS | 11 | 51 | 2017-09-24 | 2019-09-25 | Available |
| KF4NT | 10 | 49 | 2018-11-25 | 2020-11-26 | Available |
| KF4NU | 11 | 53 | 2031-04-02 | — | Active |
| KF4NV | 10 | 55 | 1998-05-10 | 2000-05-11 | Available |