WB4SRC
Available2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderSilverstein, Jack
License ClassAmateur Extra
Min. Class RequiredTechnician
LocationPalm Harbor, FL
Grant DateMar 9, 2006
Expiration DateMay 29, 2016
Cancellation DateMay 30, 2018
Available for ApplicationsMay 30, 2018
WB4SRC is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Silverstein, Jack in Palm Harbor, FL. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Crews, Stephen R on Jan 15, 2026. WB4SRC has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- -... ....- ... .-. -.-.
CW Weight: 36 units(Moderate)
Voice Phonetics
Whiskey Bravo Four Sierra Romeo Charlie
Readability: 6.5/10(Good readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License ExpiredMay 30, 2018
- License RenewedMar 9, 2006
- License ModifiedJun 7, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.