Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4IAM callsign genealogy
Currently held by Alvarez-Mayoral, Francisco I
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 KP4IAM's current licensee, walking backwards.
- Alvarez-Mayoral, Francisco IPRgranted 2019-08-02cancelled 2020-05-27
Successor callsigns
Callsigns held now by people who previously held KP4IAM.
No current licensee on record previously held this callsign.