K4OSO
Active1x3District 4
Competitive callsign — 5 applications filed with the FCC.
License HolderColeman Sr, Milton B
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationRockville, VA
Grant DateJul 14, 2023
Expiration DateJul 14, 2033
K4OSO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Coleman Sr, Milton B in Rockville, VA. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Coleman Sr, Milton B on Jun 26, 2023. K4OSO has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- --- ... ---
CW Weight: 35 units(Moderate)
Voice Phonetics
Kilo Four Oscar Sierra Oscar
Readability: 7.5/10(High readability)
License History
- Vanity Callsign GrantedJul 14, 2023
- License IssuedJul 14, 2023
- License CanceledOct 13, 2021
- License ModifiedJun 29, 2020
- License RenewedDec 2, 2014
- License IssuedJan 22, 2005
- Vanity Callsign GrantedJan 22, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.