W4MUO
Available1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderCOLBURN, RICK J
License ClassGeneral
Min. Class RequiredGeneral
LocationConstantine, MI
Grant DateJan 23, 2013
Expiration DateApr 1, 2023
Cancellation DateApr 2, 2025
Available for ApplicationsApr 2, 2025
W4MUO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by COLBURN, RICK J in Constantine, MI. 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 POE JR, WYATT T on Mar 14, 2003. W4MUO has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
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CW Weight: 34 units(Moderate)
Voice Phonetics
Whiskey Four Mike Uniform Oscar
Readability: 8/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredApr 2, 2025
- License RenewedJan 23, 2013
- License ModifiedMar 8, 2010
- Vanity Callsign GrantedApr 1, 2003
- License IssuedApr 1, 2003
- Internal Correction AppliedMar 14, 2003
- Internal Correction AppliedMar 14, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- POE JR, WYATT TFiled Mar 14, 2003Not awardedFCC ↗