Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4KPM callsign genealogy
Currently held by RIOS ROSADO, PEDRO
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 WP4KPM's current licensee, walking backwards.
- WP4AUUno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WP4KPM.
- RIOS ROSADO, PEDROPRgranted 2022-04-26cancelled 2022-05-14