N4IOI
Active1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderTHOMAS, JEFFREY D
License ClassTechnician
Min. Class RequiredGeneral
LocationATHENS, TN
Grant DateApr 11, 2026
Expiration DateMay 10, 2036
N4IOI is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by THOMAS, JEFFREY D in ATHENS, TN. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Thomas, Jeffrey D on Apr 22, 2016. N4IOI has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ....- .. --- ..
CW Weight: 24 units(Light (fast to send))
Voice Phonetics
November Four India Oscar India
Readability: 6.5/10(Good readability)
License History
- Administrative Update AppliedMay 4, 2026
- License RenewedApr 11, 2026
- Administrative Update AppliedSep 14, 2016
- License IssuedMay 10, 2016
- Vanity Callsign GrantedMay 10, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Thomas, Jeffrey DFiled Apr 22, 2016Not awardedFCC ↗