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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.

Ferguson, James LFiled Sep 26, 2025
DismissedFCC ↗
Forston, Jenny LFiled Dec 30, 2021
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 4, 2026

K4JLF FCC Vanity Status: 2 Competing Applications & History