W1SDN
Active1x3District 1
Competitive callsign — 2 applications filed with the FCC.
License HolderDonovan, Sean P
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationWashington, DC
Grant DateSep 3, 2025
Expiration DateNov 17, 2035
W1SDN is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Donovan, Sean P in Washington, DC. 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 Byrnes, Joseph M on Apr 16, 2019. W1SDN has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- .---- ... -.. -.
CW Weight: 32 units(Moderate)
Voice Phonetics
Whiskey One Sierra Delta November
Readability: 7/10(Good readability)
License History
- License RenewedSep 3, 2025
- Administrative Update AppliedMay 21, 2019
- Administrative Update AppliedAug 26, 2017
- License IssuedNov 17, 2015
- Vanity Callsign GrantedNov 17, 2015
- License ExpiredDec 10, 2009
Vanity Application Activity
Competing applications filed with the FCC for this callsign.