K4JLF
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderRUNDBERG, LELAND H
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationSPRING VALLEY, CA
Grant DateJan 19, 2022
Expiration DateJan 19, 2032
K4JLF is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by RUNDBERG, LELAND H in SPRING VALLEY, CA. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Ferguson, James L on Sep 26, 2025. K4JLF has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .--- .-.. ..-.
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo Four Juliet Lima Foxtrot
Readability: 7.5/10(High readability)
License History
- License IssuedJan 19, 2022
- Vanity Callsign GrantedJan 19, 2022
- License ExpiredJul 23, 2021
- License RenewedApr 30, 2009
- Administrative Update AppliedJul 12, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.