K4RIO
Active1x3District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderStephens, David L
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationPalm Harbor, FL
Grant DateMay 13, 2025
Expiration DateJun 24, 2035
K4RIO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Stephens, David L in Palm Harbor, FL. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Larcomb, Terry L on Jul 24, 2017. K4RIO has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .-. .. ---
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Four Romeo India Oscar
Readability: 7/10(Good readability)
License History
- License RenewedMay 13, 2025
- Administrative Update AppliedJul 30, 2019
- License RenewedJun 23, 2015
- Administrative Update AppliedOct 10, 2012
- Administrative Update AppliedDec 28, 2010
- Administrative Update AppliedSep 30, 2010
- License IssuedJun 24, 2005
- Vanity Callsign GrantedJun 24, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.