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W1OSU

Active1x3District 1

Competitive callsign — 2 applications filed with the FCC.

License HolderKAUFFMAN, CHERYL J

License ClassTechnician

Min. Class RequiredGeneral

LocationSidney, OH

Grant DateApr 2, 2025

Expiration DateApr 2, 2035

W1OSU is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by KAUFFMAN, CHERYL J in Sidney, OH. 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 Gravelese, Alan J on Jul 27, 2004. W1OSU has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

.-- .---- --- ... ..-

CW Weight: 37 units(Moderate)

Voice Phonetics

Whiskey One Oscar Sierra Uniform

Readability: 7/10(Good readability)

License History

License RenewedApr 2, 2025
License RenewedAug 5, 2014
License IssuedAug 14, 2004
Vanity Callsign GrantedAug 14, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Gravelese, Alan JFiled Jul 27, 2004
Not awardedFCC ↗
ZIMMERMANN, LUKE AFiled Feb 27, 2004
Not awardedFCC ↗

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FCC data as of Sep 3, 2026

W1OSU FCC Vanity Status: 2 Competing Applications & History