WP4U
Active2x1District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderCOLON, CARLOS M
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationAguas Buenas, PR
Grant DateMar 20, 2026
Expiration DateMay 3, 2036
WP4U is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by COLON, CARLOS M in Aguas Buenas, 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 BLANKENSHIP, STEVE C on Sep 10, 2007. WP4U has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- .--. ....- ..-
CW Weight: 27 units(Light (fast to send))
Voice Phonetics
Whiskey Papa Four Uniform
Readability: 8/10(High readability)
License History
- License RenewedMar 20, 2026
- License RenewedMar 3, 2016
- Administrative Update AppliedAug 30, 2013
- Administrative Update AppliedMay 7, 2012
- License RenewedFeb 24, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.