Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1MMM callsign genealogy
Currently held by Betzer Jr, Michael R
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 N1MMM's current licensee, walking backwards.
- Betzer Jr, Michael RCAgranted 2009-09-28cancelled 2011-04-15
Successor callsigns
Callsigns held now by people who previously held N1MMM.
- MC CABE, GARRY OCTgranted 2009-02-28cancelled 2021-03-02
All historical holders
Every license row we've seen with the callsign N1MMM, oldest first.
- MC CABE, GARRY O CT2002-02-26 → cancelled 2009-02-28
- Betzer Jr, Michael R CA2021-03-23 active