Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4DIO callsign genealogy
Currently held by Martinez-Vazquez, Dionel
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 KP4DIO's current licensee, walking backwards.
- Martinez-Vazquez, DionelPRgranted 2013-04-26cancelled 2013-06-15
Successor callsigns
Callsigns held now by people who previously held KP4DIO.
No current licensee on record previously held this callsign.