W4NJK
Active1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderMason III, Charles P
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationFresno, CA
Grant DateJan 4, 2017
Expiration DateMar 3, 2027
W4NJK is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Mason III, Charles P in Fresno, CA. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Kanakos, Nico J on Jul 14, 2026. W4NJK has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- -. .--- -.-
CW Weight: 35 units(Moderate)
Voice Phonetics
Whiskey Four November Juliet Kilo
Readability: 7/10(Good readability)
License History
- Administrative Update AppliedJun 5, 2026
- License RenewedJan 4, 2017
- License RenewedDec 6, 2006
- License ModifiedMar 8, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Kanakos, Nico JFiled Jul 14, 2026Not awardedFCC ↗