K4JJM
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderMASON, JOHN J
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationCALHOUN, GA
Grant DateOct 22, 2019
Expiration DateOct 22, 2029
K4JJM is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by MASON, JOHN J in CALHOUN, GA. 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 MAIZO, JUAN J on Dec 30, 2025. K4JJM has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .--- .--- --
CW Weight: 40 units(Moderate)
Voice Phonetics
Kilo Four Juliet Juliet Mike
Readability: 7.5/10(High readability)
License History
- License RenewedOct 22, 2019
- License RenewedApr 25, 2009
- Administrative Update AppliedMay 3, 2004
- License ModifiedMay 7, 2001
- License ModifiedJun 3, 2000
- License ModifiedNov 9, 1999
Vanity Application Activity
Competing applications filed with the FCC for this callsign.