Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1BRC callsign genealogy
Currently held by Abraham, Sean 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 W1BRC's current licensee, walking backwards.
- Abraham, SeanCOgranted 2022-08-04cancelled 2024-03-29
Successor callsigns
Callsigns held now by people who previously held W1BRC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1BRC, oldest first.
- Peterson, William R CA2010-09-21 → cancelled 2022-09-22
- Abraham, Sean R NH2024-03-29 active