KR4SN
Active2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderTHOMASON, WILLIAM M
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationGRAND RIDGE, FL
Grant DateApr 23, 2024
Expiration DateMay 31, 2034
KR4SN is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by THOMASON, WILLIAM M in GRAND RIDGE, FL. 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 NASAB, NASSER on May 8, 2025. KR4SN has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- ... -.
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Romeo Four Sierra November
Readability: 6.5/10(Good readability)
License History
- License RenewedApr 23, 2024
- License ModifiedJun 23, 2023
- Administrative Update AppliedSep 15, 2020
- License RenewedMay 3, 2014
- Administrative Update AppliedFeb 21, 2014
- License RenewedApr 8, 2004
- License RenewedApr 8, 2004
- Administrative Update AppliedJul 30, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- NASAB, NASSERFiled May 8, 2025DismissedFCC ↗