Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3BT callsign genealogy
Currently held by Woolstrum, Brian S
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 AB3BT's current licensee, walking backwards.
- Woolstrum, Brian SPAgranted 2003-10-27cancelled 2004-03-16
Successor callsigns
Callsigns held now by people who previously held AB3BT.
- Woolstrum, Brian SPAgranted 2014-06-07cancelled 2026-06-09