Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4MZY callsign genealogy
Currently held by VAZQUEZ MARTINEZ, ROSA L
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 KP4MZY's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4MZY.
No current licensee on record previously held this callsign.