W4MRO
Cancelled1x3District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderOdum, Melvin R
License ClassGeneral
Min. Class RequiredGeneral
LocationFt Walton Beach, FL
Grant DateMar 26, 2024
Cancellation DateDec 17, 2024
Available for ApplicationsDec 18, 2026
W4MRO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Odum, Melvin R in Ft Walton Beach, FL. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Odum, Melvin R on Apr 5, 2004. W4MRO has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- -- .-. ---
CW Weight: 34 units(Moderate)
Voice Phonetics
Whiskey Four Mike Romeo Oscar
Readability: 8/10(High readability)
Available Dec 18, 2026 (106 days remaining)
Requires General license or higher to apply for this callsign format (1x3).
License History
- Internal Correction AppliedJan 10, 2025
- Internal Correction AppliedJan 10, 2025
- License RenewedMar 26, 2024
- License RenewedMar 4, 2014
- License ModifiedMay 14, 2008
- License IssuedApr 23, 2004
- Vanity Callsign GrantedApr 23, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.