Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4MK callsign genealogy
Currently held by RIVERA, JOSE E
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 NP4MK's current licensee, walking backwards.
- WP4DLHno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held NP4MK.
No current licensee on record previously held this callsign.