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W1OSK

Available1x3District 1

Competitive callsign — 2 applications filed with the FCC.

License HolderBONILLA, EFRAIN S

License ClassAdvanced

Min. Class RequiredGeneral

LocationLAKE CITY, FL

Grant DateApr 28, 2004

Expiration DateApr 28, 2014

Cancellation DateApr 29, 2016

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W1OSK

Available1x3District 1

Competitive callsign — 2 applications filed with the FCC.

License HolderBONILLA, EFRAIN S

License ClassAdvanced

Min. Class RequiredGeneral

LocationLAKE CITY, FL

Grant DateApr 28, 2004

Expiration DateApr 28, 2014

Cancellation DateApr 29, 2016

Available for ApplicationsApr 29, 2016

W1OSK is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by BONILLA, EFRAIN S in LAKE CITY, FL. 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 Babb, Dennis C on Apr 8, 2004. W1OSK has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 39 units(Moderate)

Voice Phonetics

Whiskey One Oscar Sierra Kilo

Readability: 7.5/10(High readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (1x3).

License History

License ExpiredApr 29, 2016
Administrative Update AppliedJun 16, 2010
License IssuedApr 28, 2004
Vanity Callsign GrantedApr 28, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Babb, Dennis CFiled Apr 8, 2004
Not awardedFCC ↗
FORGUES, MICHAEL LFiled Apr 8, 2004
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 3, 2026

W1OSK FCC Vanity Status: 2 Competing Applications & History