K1RFR
Active1x3District 1
Competitive callsign — 2 applications filed with the FCC.
License HolderSULLIVAN III, WILLIAM C
License ClassTechnician
Min. Class RequiredGeneral
LocationTONAWANDA, NY
Grant DateApr 16, 2026
Expiration DateJun 24, 2036
K1RFR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by SULLIVAN III, WILLIAM C in TONAWANDA, NY. 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 Rufo JR, ROBERT F on Oct 21, 2020. K1RFR has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .---- .-. ..-. .-.
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo One Romeo Foxtrot Romeo
Readability: 7/10(Good readability)
License History
- License RenewedApr 16, 2026
- License RenewedApr 13, 2016
- License IssuedJun 24, 2006
- Vanity Callsign GrantedJun 24, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.