Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JMI callsign genealogy
Currently held by IRIZARRY, JOSE M
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 K4JMI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4JMI.
No current licensee on record previously held this callsign.