W4YBR
Active1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderWILLIAMSON, MARK G
License ClassTechnician
Min. Class RequiredGeneral
LocationCOLUMBIA, SC
Grant DateMay 13, 2026
Expiration DateMay 10, 2036
W4YBR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by WILLIAMSON, MARK G in COLUMBIA, SC. 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 WILLIAMSON, MARK G on Apr 21, 2016. W4YBR has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- -.-- -... .-.
CW Weight: 35 units(Moderate)
Voice Phonetics
Whiskey Four Yankee Bravo Romeo
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedMay 18, 2026
- License RenewedMay 13, 2026
- License IssuedMay 10, 2016
- Vanity Callsign GrantedMay 10, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- WILLIAMSON, MARK GFiled Apr 21, 2016Not awardedFCC ↗