Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MBU callsign genealogy
Currently held by BOSQUEZ SR, MARIO
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 K5MBU's current licensee, walking backwards.
- BOSQUEZ SR, MARIOcancelled 1999-07-15
Successor callsigns
Callsigns held now by people who previously held K5MBU.
No current licensee on record previously held this callsign.