K4DXX
Active1x3District 4
Competitive callsign — 6 applications filed with the FCC.
License HolderMANSFIELD, WILLIAM
License ClassGeneral
Min. Class RequiredGeneral
LocationCoosa, GA
Grant DateJun 25, 2026
Expiration DateSep 9, 2036
K4DXX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by MANSFIELD, WILLIAM in Coosa, GA. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by MANSFIELD, WILLIAM P on Aug 22, 2016. K4DXX has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -.. -..- -..-
CW Weight: 35 units(Moderate)
Voice Phonetics
Kilo Four Delta X-ray X-ray
Readability: 8/10(High readability)
License History
- License RenewedJun 25, 2026
- Administrative Update AppliedAug 19, 2017
- License IssuedSep 9, 2016
- Vanity Callsign GrantedSep 9, 2016
- License ExpiredJul 12, 2016
- Tax ID (TIN) AddedApr 19, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.