Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1UGL callsign genealogy
Currently held by Brennan, Matthew D
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 N1UGL's current licensee, walking backwards.
- Brennan, Matthew DDCgranted 2026-02-03cancelled 2026-02-21
Successor callsigns
Callsigns held now by people who previously held N1UGL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1UGL, oldest first.
- BRENNAN, MATTHEW D DC2004-11-25 → cancelled 2017-02-09
- Brennan, Matthew D DC2026-02-21 active