K4DOS
Active1x3District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderTRUITT, KEVIN R
License ClassGeneral
Min. Class RequiredGeneral
LocationDENVER, CO
Grant DateSep 11, 2026
Expiration DateSep 11, 2036
K4DOS is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by TRUITT, KEVIN R in DENVER, CO. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by TRUITT, KEVIN R on Aug 24, 2026. K4DOS has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -.. --- ...
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Four Delta Oscar Sierra
Readability: 7.5/10(High readability)
License History
- License IssuedSep 11, 2026
- Vanity Callsign GrantedSep 11, 2026
- License ExpiredJan 30, 2024
- License ModifiedMar 5, 2012
- License RenewedJan 28, 2012
- License IssuedMar 14, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.