Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JVM callsign genealogy
Currently held by VALLEJO MARRERO, JOEL
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 KP4JVM's current licensee, walking backwards.
- VALLEJO MARRERO, JOELPRgranted 2019-10-28cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held KP4JVM.
No current licensee on record previously held this callsign.