WB4OSU
Active2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderRapp, Sherri
License ClassGeneral
Min. Class RequiredTechnician
LocationMebane, NC
Grant DateSep 9, 2025
Expiration DateOct 16, 2035
WB4OSU is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Rapp, Sherri in Mebane, NC. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Rapp, Sherri on Sep 28, 2015. WB4OSU has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- -... ....- --- ... ..-
CW Weight: 37 units(Moderate)
Voice Phonetics
Whiskey Bravo Four Oscar Sierra Uniform
Readability: 6.5/10(Good readability)
License History
- License RenewedSep 9, 2025
- License ModifiedMar 23, 2016
- License IssuedOct 16, 2015
- Vanity Callsign GrantedOct 16, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Rapp, SherriFiled Sep 28, 2015Not awardedFCC ↗