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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.

Rufo JR, ROBERT FFiled Oct 21, 2020
Not awardedFCC ↗
Filizola, Ricardo PFiled Jun 6, 2006
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

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← K1RFP K1RFS →

FCC data as of Sep 4, 2026

K1RFR FCC Vanity Status: 2 Competing Applications & History