K3DOS
Active1x3District 3
Competitive callsign — 3 applications filed with the FCC.
License HolderShapiro, David O
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationHALETHORPE, MD
Grant DateMar 13, 2025
Expiration DateApr 15, 2035
K3DOS is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Shapiro, David O in HALETHORPE, MD. 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 Shapiro, David O on Mar 28, 2005. K3DOS has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ...-- -.. --- ...
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Three Delta Oscar Sierra
Readability: 7.5/10(High readability)
License History
- License RenewedMar 13, 2025
- Administrative Update AppliedApr 3, 2018
- License RenewedFeb 13, 2015
- License ModifiedDec 8, 2005
- Administrative Update AppliedMay 10, 2005
- License IssuedApr 15, 2005
- Vanity Callsign GrantedApr 15, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.