Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4KPN callsign genealogy
Currently held by RUIZ RIVERA, LUIS R
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by WP4KPN's current licensee, walking backwards.
- WP4JIRno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WP4KPN.
- RUIZ RIVERA, LUIS RPRgranted 2023-07-18cancelled 2023-12-16