District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4FAU | 10 | 53 | 2026-02-26 | — | Active |
| K4FAV | 9 | 55 | — | — | Available |
| K4FAW | 9 | 55 | — | — | Available |
| K4FAX | 9 | 57 | 2030-12-08 | — | Active (Vanity) |
| K4FAY | 9 | 59 | 2018-02-06 | 2020-02-07 | Available |
| K4FAZ | 9 | 57 | 2017-11-18 | 2019-11-19 | Available |
| K4FBA | 9 | 55 | — | — | Available |
| K4FBB | 9 | 59 | — | — | Available |
| K4FBC | 9 | 61 | 2034-04-22 | — | Active (Vanity) |
| K4FBD | 9 | 57 | 2024-06-18 | 2026-06-19 | Available |
| K4FBE | 9 | 51 | 2028-04-15 | — | Active |
| K4FBF | 9 | 59 | — | — | Available |
| K4FBG | 8 | 59 | 2034-07-03 | — | Active (Vanity) |
| K4FBH | 9 | 57 | — | — | Available |
| K4FBI | 10 | 53 | 2027-12-19 | — | Active (Vanity) |
| K4FBJ | 10 | 63 | — | — | Available |
| K4FBK | 9 | 59 | 2033-01-06 | — | Active (Vanity) |
| K4FBL | 9 | 59 | — | — | Available |
| K4FBM | 8 | 57 | 2016-05-29 | 2018-05-30 | Available |
| K4FBN | 10 | 55 | — | — | Available |
| K4FBO | 9 | 61 | 2015-10-03 | 2017-10-04 | Available |
| K4FBP | 9 | 61 | 2020-02-13 | 2022-02-14 | Available |
| K4FBQ | 9 | 63 | 2015-02-03 | 2017-02-04 | Available |
| K4FBR | 10 | 57 | — | — | Available |
| K4FBS | 10 | 55 | 2031-05-15 | — | Active (Vanity) |
| K4FBT | 9 | 53 | — | — | Available |
| K4FBU | 10 | 57 | — | — | Available |
| K4FBV | 9 | 59 | — | — | Available |
| K4FBW | 9 | 59 | — | — | Available |
| K4FBX | 9 | 61 | 1998-03-22 | 2000-03-23 | Available |
| K4FBY | 9 | 63 | — | — | Available |
| K4FBZ | 9 | 61 | — | — | Available |
| K4FCA | 9 | 57 | — | — | Available |
| K4FCB | 9 | 61 | 2026-12-11 | — | Active |
| K4FCC | 9 | 63 | 2036-11-15 | — | Active (Vanity) |
| K4FCD | 9 | 59 | — | — | Available |
| K4FCE | 9 | 53 | — | — | Available |
| K4FCF | 9 | 61 | 2022-03-30 | 2024-03-31 | Available |
| K4FCG | 8 | 61 | 2024-03-05 | 2026-03-06 | Available |
| K4FCH | 9 | 59 | 2022-03-08 | 2024-03-09 | Available |
| K4FCI | 10 | 55 | — | — | Available |
| K4FCJ | 10 | 65 | — | — | Available |
| K4FCK | 9 | 61 | — | — | Available |
| K4FCL | 9 | 61 | 2017-08-03 | 2019-08-04 | Available |
| K4FCM | 8 | 59 | 2032-04-15 | — | Active (Vanity) |
| K4FCN | 10 | 57 | 1999-03-07 | 2001-03-08 | Available |
| K4FCO | 9 | 63 | — | — | Available |
| K4FCP | 9 | 63 | 2028-03-03 | — | Active (Vanity) |
| K4FCQ | 9 | 65 | — | — | Available |
| K4FCR | 10 | 59 | — | — | Available |
| K4FCS | 10 | 57 | — | — | Available |
| K4FCT | 9 | 55 | 1998-03-22 | 2000-03-23 | Available |
| K4FCU | 10 | 59 | — | — | Available |
| K4FCV | 9 | 61 | — | — | Available |
| K4FCW | 9 | 61 | 2032-03-06 | — | Active (Vanity) |
| K4FCX | 9 | 63 | — | — | Available |
| K4FCY | 9 | 65 | — | — | Available |
| K4FCZ | 9 | 63 | 2032-04-02 | — | Active (Vanity) |
| K4FDA | 9 | 53 | 2017-12-18 | 2019-12-19 | Available |
| K4FDB | 9 | 57 | 2033-04-04 | — | Active (Vanity) |
| K4FDC | 9 | 59 | 2032-04-05 | — | Active (Vanity) |
| K4FDD | 9 | 55 | — | — | Available |
| K4FDE | 9 | 49 | 2029-04-23 | — | Active (Vanity) |
| K4FDF | 9 | 57 | — | — | Available |
| K4FDG | 8 | 57 | — | — | Available |
| K4FDH | 9 | 55 | — | — | Available |
| K4FDI | 10 | 51 | — | — | Available |
| K4FDJ | 10 | 61 | 2010-02-15 | 2012-02-16 | Available |
| K4FDK | 9 | 57 | 2027-03-29 | — | Active (Vanity) |
| K4FDL | 9 | 57 | 2033-03-16 | — | Active (Vanity) |
| K4FDM | 8 | 55 | 2031-03-09 | — | Active (Vanity) |
| K4FDN | 10 | 53 | — | — | Available |
| K4FDO | 9 | 59 | 2028-03-04 | — | Active (Vanity) |
| K4FDP | 9 | 59 | 2031-04-23 | — | Active |
| K4FDQ | 9 | 61 | — | — | Available |
| K4FDR | 10 | 55 | — | — | Available |
| K4FDS | 10 | 53 | 2034-06-08 | — | Active (Vanity) |
| K4FDT | 9 | 51 | 1999-04-21 | 2001-04-22 | Available |
| K4FDU | 10 | 55 | — | — | Available |
| K4FDV | 9 | 57 | — | — | Available |
| K4FDW | 9 | 57 | 2036-11-26 | — | Active (Vanity) |
| K4FDX | 9 | 59 | 2025-02-28 | 2027-03-01 | Canceled (grace period) |
| K4FDY | 9 | 61 | 2014-04-12 | 2016-04-13 | Available |
| K4FDZ | 9 | 59 | 1998-05-31 | 2000-06-01 | Available |
| K4FEA | 9 | 47 | 2015-09-24 | 2017-09-25 | Available |
| K4FEB | 9 | 51 | 2035-09-09 | — | Active (Vanity) |
| K4FEC | 9 | 53 | 2012-03-23 | 2014-03-24 | Available |
| K4FED | 9 | 49 | 2031-06-15 | — | Active (Vanity) |
| K4FEE | 9 | 43 | — | — | Available |
| K4FEF | 9 | 51 | — | — | Available |
| K4FEG | 8 | 51 | 2032-02-15 | — | Active (Vanity) |
| K4FEH | 9 | 49 | 2005-10-27 | 2007-10-28 | Available |
| K4FEI | 10 | 45 | — | — | Available |
| K4FEJ | 10 | 55 | — | — | Available |
| K4FEK | 9 | 51 | 2028-03-13 | — | Active (Vanity) |
| K4FEL | 9 | 51 | 2031-10-14 | — | Active (Vanity) |
| K4FEM | 8 | 49 | 2028-05-05 | — | Active (Vanity) |
| K4FEN | 10 | 47 | — | — | Available |
| K4FEO | 9 | 53 | — | — | Available |
| K4FEP | 9 | 53 | 2020-01-30 | 2022-01-31 | Available |