WP4OO
Active2x2District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderNieves Febus, Lillian
License ClassGeneral
Min. Class RequiredGeneral
LocationToa Baja, PR
Grant DateSep 11, 2025
Expiration DateOct 2, 2035
WP4OO is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Nieves Febus, Lillian in Toa Baja, PR. 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 Nieves Febus, Lillian on Sep 14, 2015. WP4OO has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
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CW Weight: 40 units(Moderate)
Voice Phonetics
Whiskey Papa Four Oscar Oscar
Readability: 8/10(High readability)
License History
- License RenewedSep 11, 2025
- License ModifiedAug 12, 2025
- License IssuedOct 2, 2015
- Vanity Callsign GrantedOct 2, 2015
- License ExpiredMay 11, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.