Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6MBM callsign genealogy
Currently held by McDonough, 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 N6MBM's current licensee, walking backwards.
- McDonough, Michael BCAgranted 2004-01-06cancelled 2011-03-01
Successor callsigns
Callsigns held now by people who previously held N6MBM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6MBM, oldest first.
- OKAMOTO, TAKEO CA1995-04-25 → cancelled 2007-04-26
- McDonough, Michael B CA2021-01-30 active