WO3U
Active2x1District 3
Competitive callsign — 27 applications filed with the FCC.
License HolderShellenbarger, Anthony J
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationIndiana, PA
Grant DateMay 12, 2026
Expiration DateMay 12, 2036
WO3U is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by Shellenbarger, Anthony J in Indiana, PA. This callsign has attracted significant interest in the amateur radio community, with 27 vanity applications filed with the FCC. The most recent was submitted by Lewis, Matthew J on Apr 24, 2026. WO3U has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- --- ...-- ..-
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Whiskey Oscar Three Uniform
Readability: 8/10(High readability)
License History
- License IssuedMay 12, 2026
- Vanity Callsign GrantedMay 12, 2026
- License ExpiredApr 23, 2026
- License IssuedApr 22, 2014
- Vanity Callsign GrantedApr 22, 2014
- License ExpiredJul 3, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.