Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1US callsign genealogy
Currently held by THOMAS, BRIAN P
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 N1US's current licensee, walking backwards.
- Thomas, Brian PFLgranted 2014-06-20cancelled 2016-05-27
Successor callsigns
Callsigns held now by people who previously held N1US.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1US, oldest first.
- COOK, DALE C MA2006-07-21 → cancelled 2014-05-06
- THOMAS, BRIAN P FL2026-03-25 active