W4SNO
Active1x3District 4
Competitive callsign — 6 applications filed with the FCC.
License HolderKillian, Patrick J
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationSan Francisco, CA
Grant DateOct 25, 2024
Expiration DateOct 25, 2034
W4SNO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Killian, Patrick J in San Francisco, CA. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Killian, Patrick J on Oct 7, 2024. W4SNO has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- ... -. ---
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Whiskey Four Sierra November Oscar
Readability: 7/10(Good readability)
License History
- License ModifiedApr 3, 2026
- Administrative Update AppliedJul 18, 2025
- License ModifiedNov 7, 2024
- Vanity Callsign GrantedOct 25, 2024
- License IssuedOct 25, 2024
- License ExpiredSep 17, 2021
- License RenewedAug 6, 2009
- License IssuedSep 16, 1999
Vanity Application Activity
Competing applications filed with the FCC for this callsign.