Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JMM callsign genealogy
Currently held by MATOS, JESUS 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 KP4JMM's current licensee, walking backwards.
- MATOS, JESUS MPRgranted 2007-03-08cancelled 2009-05-15
Successor callsigns
Callsigns held now by people who previously held KP4JMM.
No current licensee on record previously held this callsign.