WP4KF
Available2x2District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderCOLLAZO, LUIS R
License ClassP
Min. Class RequiredGeneral
LocationCAGUAS, PR
Grant DateAug 11, 1987
Expiration DateAug 11, 1997
Cancellation DateAug 16, 1999
Available for ApplicationsAug 12, 1999
WP4KF is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by COLLAZO, LUIS R in CAGUAS, PR. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Stewart, Ryan on Nov 26, 2025. WP4KF has 1 recorded FCC license history event.
CW & Voice Analysis
Morse Code
.-- .--. ....- -.- ..-.
CW Weight: 35 units(Moderate)
Voice Phonetics
Whiskey Papa Four Kilo Foxtrot
Readability: 8/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredAug 16, 1999
Vanity Application Activity
Competing applications filed with the FCC for this callsign.