District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4FIM | 9 | 51 | — | — | Available |
| K4FIN | 11 | 49 | 2026-02-03 | — | Active (Vanity) |
| K4FIO | 10 | 55 | 2028-01-03 | — | Active (Vanity) |
| K4FIP | 10 | 55 | — | — | Available |
| K4FIQ | 10 | 57 | — | — | Available |
| K4FIR | 11 | 51 | 2035-09-16 | — | Active (Vanity) |
| K4FIS | 11 | 49 | — | — | Available |
| K4FIT | 10 | 47 | — | — | Pending Application |
| K4FIU | 11 | 51 | 2027-06-26 | — | Active (Vanity) |
| K4FIV | 10 | 53 | 2022-03-18 | 2024-03-19 | Available |
| K4FIW | 10 | 53 | — | — | Available |
| K4FIX | 10 | 55 | 2025-11-08 | — | Active |
| K4FIY | 10 | 57 | — | — | Available |
| K4FIZ | 10 | 55 | — | — | Available |
| K4FJA | 10 | 59 | 2029-03-18 | — | Active |
| K4FJB | 10 | 63 | 2023-01-21 | 2025-01-22 | Available |
| K4FJC | 10 | 65 | 2023-07-06 | 2025-07-07 | Available |
| K4FJD | 10 | 61 | 2027-05-31 | — | Active (Vanity) |
| K4FJE | 10 | 55 | 2011-10-16 | 2013-10-17 | Available |
| K4FJF | 10 | 63 | — | — | Available |
| K4FJG | 9 | 63 | 2013-02-15 | 2015-02-16 | Available |
| K4FJH | 10 | 61 | 2034-12-14 | — | Active (Vanity) |
| K4FJI | 11 | 57 | — | — | Available |
| K4FJJ | 11 | 67 | — | — | Available |
| K4FJK | 10 | 63 | 2024-03-22 | 2026-03-23 | Available |
| K4FJL | 10 | 63 | 2028-01-09 | — | Active (Vanity) |
| K4FJM | 9 | 61 | 2021-04-08 | 2023-04-09 | Available |
| K4FJN | 11 | 59 | — | — | Available |
| K4FJO | 10 | 65 | — | — | Available |
| K4FJP | 10 | 65 | 2029-04-09 | — | Active (Vanity) |
| K4FJQ | 10 | 67 | — | — | Available |
| K4FJR | 11 | 61 | 2028-04-03 | — | Active (Vanity) |
| K4FJS | 11 | 59 | 2036-09-19 | — | Active (Vanity) |
| K4FJT | 10 | 57 | — | — | Available |
| K4FJU | 11 | 61 | 2034-03-12 | — | Active (Vanity) |
| K4FJV | 10 | 63 | 2005-11-28 | 2007-11-29 | Available |
| K4FJW | 10 | 63 | 2028-01-22 | — | Active |
| K4FJX | 10 | 65 | 2011-03-02 | 2013-03-03 | Available |
| K4FJY | 10 | 67 | — | — | Available |
| K4FJZ | 10 | 65 | 2036-06-19 | — | Active |
| K4FKA | 9 | 55 | 2036-08-13 | — | Active (Vanity) |
| K4FKB | 9 | 59 | 1998-03-22 | 2000-03-23 | Available |
| K4FKC | 9 | 61 | 2035-02-08 | — | Active (Vanity) |
| K4FKD | 9 | 57 | — | — | Available |
| K4FKE | 9 | 51 | 2006-06-28 | 2008-06-29 | Available |
| K4FKF | 9 | 59 | 2013-02-23 | 2015-02-24 | Available |
| K4FKG | 8 | 59 | 2033-09-07 | — | Active |
| K4FKH | 9 | 57 | — | — | Available |
| K4FKI | 10 | 53 | — | — | Available |
| K4FKJ | 10 | 63 | 2028-02-03 | — | Active |
| K4FKK | 9 | 59 | — | — | Available |
| K4FKL | 9 | 59 | 2026-03-01 | — | Active |
| K4FKM | 8 | 57 | 2035-08-08 | — | Active (Vanity) |
| K4FKN | 10 | 55 | 2004-07-07 | 2006-07-08 | Available |
| K4FKO | 9 | 61 | — | — | Available |
| K4FKP | 9 | 61 | 2004-03-29 | 2006-03-30 | Available |
| K4FKQ | 9 | 63 | — | — | Available |
| K4FKR | 10 | 57 | — | — | Available |
| K4FKS | 10 | 55 | 2009-06-17 | 2011-06-18 | Available |
| K4FKT | 9 | 53 | — | — | Available |
| K4FKU | 10 | 57 | — | — | Available |
| K4FKV | 9 | 59 | 2028-05-04 | — | Active |
| K4FKW | 9 | 59 | — | — | Available |
| K4FKX | 9 | 61 | 2012-08-28 | 2014-08-29 | Available |
| K4FKY | 9 | 63 | 2036-10-16 | — | Active (Vanity) |
| K4FKZ | 9 | 61 | 2019-08-05 | 2021-08-06 | Available |
| K4FLA | 9 | 55 | 2029-04-05 | — | Active (Vanity) |
| K4FLB | 9 | 59 | 2034-05-28 | — | Active (Vanity) |
| K4FLC | 9 | 61 | 2016-12-15 | 2018-12-16 | Available |
| K4FLD | 9 | 57 | 2030-07-24 | — | Active (Vanity) |
| K4FLE | 9 | 51 | — | — | Available |
| K4FLF | 9 | 59 | 2035-07-08 | — | Active (Vanity) |
| K4FLG | 8 | 59 | 2026-01-11 | — | Active |
| K4FLH | 9 | 57 | 2025-01-28 | 2027-01-29 | Canceled (grace period) |
| K4FLI | 10 | 53 | 2030-09-29 | — | Active (Vanity) |
| K4FLJ | 10 | 63 | — | — | Available |
| K4FLK | 9 | 59 | 2032-02-18 | — | Active (Vanity) |
| K4FLL | 9 | 59 | 2029-03-17 | — | Active (Vanity) |
| K4FLM | 8 | 57 | 2028-07-10 | — | Active (Vanity) |
| K4FLN | 10 | 55 | — | — | Available |
| K4FLO | 9 | 61 | — | — | Available |
| K4FLP | 9 | 61 | 2022-11-17 | 2024-11-18 | Available |
| K4FLQ | 9 | 63 | — | — | Available |
| K4FLR | 10 | 57 | — | — | Available |
| K4FLS | 10 | 55 | 2036-12-11 | — | Active (Vanity) |
| K4FLT | 9 | 53 | 2032-05-27 | — | Active (Vanity) |
| K4FLU | 10 | 57 | 2014-09-19 | 2016-09-20 | Available |
| K4FLV | 9 | 59 | 2031-01-04 | — | Active (Vanity) |
| K4FLW | 9 | 59 | 2002-02-04 | 2004-02-05 | Available |
| K4FLX | 9 | 61 | 2029-08-23 | — | Active (Vanity) |
| K4FLY | 9 | 63 | 2028-04-04 | — | Active (Vanity) |
| K4FLZ | 9 | 61 | — | — | Available |
| K4FMA | 8 | 53 | — | — | Available |
| K4FMB | 8 | 57 | 2027-10-06 | — | Active |
| K4FMC | 8 | 59 | 2031-07-09 | — | Active |
| K4FMD | 8 | 55 | 2029-07-15 | — | Active (Vanity) |
| K4FME | 8 | 49 | 2030-01-29 | — | Active (Vanity) |
| K4FMF | 8 | 57 | 2033-01-10 | — | Active (Vanity) |
| K4FMG | 7 | 57 | 2022-07-23 | 2024-07-24 | Available |
| K4FMH | 8 | 55 | 2029-12-22 | — | Active (Vanity) |