KP4LRR
Active2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderRuiz Rivera, Luis
License ClassTechnician
Min. Class RequiredTechnician
LocationPonce, PR
Grant DateApr 30, 2026
Expiration DateApr 30, 2036
KP4LRR is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Ruiz Rivera, Luis in Ponce, PR. 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 Ruiz Rivera, Luis on Dec 7, 2015. KP4LRR has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .--. ....- .-.. .-. .-.
CW Weight: 38 units(Moderate)
Voice Phonetics
Kilo Papa Four Lima Romeo Romeo
Readability: 6.5/10(Good readability)
License History
- License RenewedApr 30, 2026
- License IssuedDec 25, 2015
- Vanity Callsign GrantedDec 25, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Ruiz Rivera, LuisFiled Dec 7, 2015Not awardedFCC ↗