Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NM1B callsign genealogy
Currently held by Brennan, Matthew T
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 NM1B's current licensee, walking backwards.
- Brennan, Matthew TMAgranted 2007-01-24cancelled 2009-07-21
Successor callsigns
Callsigns held now by people who previously held NM1B.
- DAMIANI, GUYGAgranted 2006-01-10cancelled 2012-08-17
All historical holders
Every license row we've seen with the callsign NM1B, oldest first.
- DAMIANI, GUY GA2005-04-16 → cancelled 2006-01-10
- Brennan, Matthew T MA2019-05-13 active