W6STO
Active1x3District 6
Competitive callsign — 1 application filed with the FCC.
License HolderBranstetter, Matthew S
License ClassGeneral
Min. Class RequiredGeneral
LocationCloverdale, CA
Grant DateMar 22, 2019
Expiration DateMar 22, 2029
W6STO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Branstetter, Matthew S in Cloverdale, CA. 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 Branstetter, Matthew S on Mar 4, 2019. W6STO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
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CW Weight: 29 units(Light (fast to send))
Voice Phonetics
Whiskey Six Sierra Tango Oscar
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedNov 25, 2025
- License IssuedMar 22, 2019
- Vanity Callsign GrantedMar 22, 2019
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Branstetter, Matthew SFiled Mar 4, 2019Not awardedFCC ↗