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N4WSO

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderCostello, Eugene

License ClassGeneral

Min. Class RequiredGeneral

LocationSt Louis, MO

Grant DateApr 13, 1999

Expiration DateApr 13, 2009

Cancellation DateApr 14, 2011

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N4WSO

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderCostello, Eugene

License ClassGeneral

Min. Class RequiredGeneral

LocationSt Louis, MO

Grant DateApr 13, 1999

Expiration DateApr 13, 2009

Cancellation DateApr 14, 2011

Available for ApplicationsApr 14, 2011

N4WSO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Costello, Eugene in St Louis, MO. 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 Anderson, John C on Jan 3, 2012. N4WSO has 1 recorded FCC license history event.

CW & Voice Analysis

Morse Code

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

CW Weight: 30 units(Light (fast to send))

Voice Phonetics

November Four Whiskey Sierra Oscar

Readability: 7/10(Good readability)

This callsign is available now

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

License History

License ExpiredApr 14, 2011

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Anderson, John CFiled Jan 3, 2012
Not awardedFCC ↗

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FCC data as of Jul 30, 2026

N4WSO FCC Vanity Status: 1 Competing Application & History