KX4O
Active2x1District 4
Competitive callsign — 6 applications filed with the FCC.
License HolderSIMPSON, MARTHA L
License ClassTechnician
Min. Class RequiredAmateur Extra
LocationKNOXVILLE, TN
Grant DateJan 14, 2017
Expiration DateFeb 8, 2027
KX4O is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by SIMPSON, MARTHA L in KNOXVILLE, TN. 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 stansell, Sandra B on Feb 1, 2007. KX4O has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -..- ....- ---
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo X-ray Four Oscar
Readability: 8.5/10(High readability)
License History
- License RenewedJan 14, 2017
- License IssuedFeb 8, 2007
- Vanity Callsign GrantedFeb 8, 2007
- License ExpiredDec 21, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.