Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4KM callsign genealogy
Currently held by Cruz Rod, Rolando J
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 NP4KM's current licensee, walking backwards.
- Cruz Rod, Rolando JFLgranted 2025-04-08cancelled 2025-04-26
Successor callsigns
Callsigns held now by people who previously held NP4KM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP4KM, oldest first.
- CRUZ RODRIGUEZ, ROLANDO J PR1995-08-02 → cancelled 2007-08-03
- Cruz Rod, Rolando J FL2025-04-26 active