Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4BT callsign genealogy
Currently held by STRANDBERG SR, JOHN A
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 AJ4BT's current licensee, walking backwards.
- Taylor, Bradley WVAgranted 2022-01-31cancelled 2023-01-24
Successor callsigns
Callsigns held now by people who previously held AJ4BT.
- STRANDBERG, JOHN ANCgranted 2020-04-08
All historical holders
Every license row we've seen with the callsign AJ4BT, oldest first.
- STRANDBERG SR, JOHN A NC2007-08-13 → cancelled 2010-05-21
- Taylor, Bradley W VA2023-01-24 active