Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4AMZ callsign genealogy
Currently held by MONTALVO ZAVALA, AXEL
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 KP4AMZ's current licensee, walking backwards.
- MONTALVO ZAVALA, AXELcancelled 1999-07-27
Successor callsigns
Callsigns held now by people who previously held KP4AMZ.
- MONTALVO ZAVALA, AXELOHgranted 2020-03-18cancelled 2020-07-31