KO4JCL
Active2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderLAMPARTER, JEFFREY C
License ClassGeneral
Min. Class RequiredTechnician
LocationKNOXVILLE, TN
Grant DateDec 10, 2019
Expiration DateDec 10, 2029
KO4JCL is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by LAMPARTER, JEFFREY C in KNOXVILLE, TN. 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 Layton, James C on Feb 9, 2021. KO4JCL has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- .--- -.-. .-..
CW Weight: 47 units(Heavy (slower to send))
Voice Phonetics
Kilo Oscar Four Juliet Charlie Lima
Readability: 7/10(Good readability)
License History
- License ModifiedMar 23, 2026
- Administrative Update AppliedDec 18, 2019
- License IssuedDec 10, 2019
- Vanity Callsign GrantedDec 10, 2019
Vanity Application Activity
Competing applications filed with the FCC for this callsign.