K4SO
Active1x2District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderKILLMON, MARK C
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationAmissville, VA
Grant DateAug 8, 2016
Expiration DateNov 4, 2026
K4SO is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by KILLMON, MARK C in Amissville, VA. 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 O'Donnell, STEVEN W on Dec 29, 2017. K4SO has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- ... ---
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Four Sierra Oscar
Readability: 8/10(High readability)
License History
- License RenewedAug 8, 2016
- Administrative Update AppliedDec 6, 2011
- License RenewedAug 8, 2006
- Administrative Update AppliedJul 27, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.