Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4EPA callsign genealogy
Currently held by AYALA HEREDIA, CARMELO
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 WP4EPA's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WP4EPA.
- AYALA HEREDIA, CARMELOPRgranted 2018-09-24