K0JK
Active1x2District 0
Competitive callsign — 11 applications filed with the FCC.
License HolderKnowles, Jonathan W
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationLITCHFIELD, MN
Grant DateAug 14, 2018
Expiration DateOct 21, 2028
K0JK is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Knowles, Jonathan W in LITCHFIELD, MN. This callsign has attracted significant interest in the amateur radio community, with 11 vanity applications filed with the FCC. The most recent was submitted by MCCLAIN, DAVID A on Jun 6, 2016. K0JK has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- .--- -.-
CW Weight: 39 units(Moderate)
Voice Phonetics
Kilo Zero Juliet Kilo
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedFeb 28, 2026
- License RenewedAug 14, 2018
- License IssuedOct 21, 2008
- Vanity Callsign GrantedOct 21, 2008
- License CanceledSep 30, 2006
- Administrative Update AppliedSep 12, 2006
- FRN Association Email SentSep 10, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.