Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5MJR callsign genealogy
Currently held by RIVERA, MICHAEL 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 K5MJR's current licensee, walking backwards.
- Rivera, Michael JTXgranted 2010-07-02cancelled 2010-08-13
Successor callsigns
Callsigns held now by people who previously held K5MJR.
No current licensee on record previously held this callsign.