WA1THF
Active2x3District 1
No competing applications on record.
License HolderByun, Sangsook
License ClassTechnician
Min. Class RequiredTechnician
LocationWalnut Creek, CA
Grant DateApr 24, 2026
Expiration DateJun 27, 2036
WA1THF is a 2x3 format amateur radio callsign. It is currently registered to Byun, Sangsook in Walnut Creek, CA. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.
CW & Voice Analysis
Morse Code
.-- .- .---- - .... ..-.
CW Weight: 37 units(Moderate)
Voice Phonetics
Whiskey Alpha One Tango Hotel Foxtrot
Readability: 7.5/10(High readability)
License History
- License RenewedApr 24, 2026
- License RenewedMay 27, 2016
- Administrative Update AppliedOct 28, 2006
- License RenewedMay 9, 2006
- License ModifiedJun 7, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications on record. Verify on the FCC ULS application search before filing.