K4KSW
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderERNISSEE, JOHN A
License ClassGeneral
Min. Class RequiredGeneral
LocationHASTINGS, FL
Grant DateApr 9, 2026
Expiration DateJun 17, 2036
K4KSW is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by ERNISSEE, JOHN A in HASTINGS, FL. 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 Ernissee, John A on May 30, 2006. K4KSW has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -.- ... .--
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Four Kilo Sierra Whiskey
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedMay 4, 2026
- License RenewedApr 9, 2026
- License RenewedApr 7, 2016
- Administrative Update AppliedJan 7, 2013
- License IssuedJun 17, 2006
- Vanity Callsign GrantedJun 17, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.