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W5MSO

Active1x3District 5

Competitive callsign — 5 applications filed with the FCC.

License HolderO'Rourke, Michael S

License ClassGeneral

Min. Class RequiredGeneral

LocationJacksonville, FL

Grant DateMar 3, 2026

Expiration DateMar 3, 2036

W5MSO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by O'Rourke, Michael S in Jacksonville, FL. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by O'Rourke, Michael S on Sep 27, 2004. W5MSO has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

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

Voice Phonetics

Whiskey Five Mike Sierra Oscar

Readability: 8/10(High readability)

License History

License RenewedMar 3, 2026
License RenewedFeb 13, 2016
License ModifiedMar 13, 2007
Administrative Update AppliedJun 25, 2005
License IssuedOct 15, 2004
Vanity Callsign GrantedOct 15, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

O'Rourke, Michael SFiled Sep 27, 2004
Not awardedFCC ↗
HEHMANN, RICHARD JFiled Apr 6, 2001
Not awardedFCC ↗
Olle Middle School ClubFiled Apr 6, 2001
Not awardedFCC ↗
BALDWIN, SAMMY RFiled Jun 5, 2000

Search external databases

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FCC data as of Sep 3, 2026

Not awarded

Midland County Sheriff's OfficeFiled Jun 5, 2000

Not awardedFCC ↗

W5MSO FCC Vanity Status: 5 Competing Applications & History