AD0SC
Available2x2District 0
Competitive callsign — 1 application filed with the FCC.
License HolderSiebert, Clifford L
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationFenton, MO
Grant DateApr 12, 2014
Expiration DateApr 12, 2024
Cancellation DateApr 14, 2026
Available for ApplicationsApr 13, 2026
AD0SC is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Siebert, Clifford L in Fenton, MO. 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 Siebert, Clifford L on Mar 25, 2014. AD0SC has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.- -.. ----- ... -.-.
CW Weight: 35 units(Moderate)
Voice Phonetics
Alpha Delta Zero Sierra Charlie
Readability: 7/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredApr 14, 2026
- License IssuedApr 12, 2014
- Vanity Callsign GrantedApr 12, 2014
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Siebert, Clifford LFiled Mar 25, 2014Not awardedFCC ↗