Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MJB callsign genealogy
Currently held by BETZ, 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 K5MJB's current licensee, walking backwards.
- BETZ, MICHAEL Jcancelled 1997-10-15
Successor callsigns
Callsigns held now by people who previously held K5MJB.
No current licensee on record previously held this callsign.