Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9MBL callsign genealogy
Currently held by LAUBOROUGH, MICHAEL B
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 K9MBL's current licensee, walking backwards.
- LAUBOROUGH, MICHAEL BAZgranted 2001-02-23cancelled 2001-03-20
Successor callsigns
Callsigns held now by people who previously held K9MBL.
- LAUBOROUGH, MICHAEL BAZgranted 2018-11-29