Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4BMW callsign genealogy
Currently held by Shanahan, Brian
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 K4BMW's current licensee, walking backwards.
- Shanahan, BrianFLgranted 2018-08-13cancelled 2018-09-01
Successor callsigns
Callsigns held now by people who previously held K4BMW.
- THURBER, TIMOTHY ANCgranted 2022-05-17
All historical holders
Every license row we've seen with the callsign K4BMW, oldest first.
- THURBER, TIMOTHY A NC2001-04-07 → cancelled 2002-03-28
- NAKABEPPU, KOJI MP2006-04-15 → cancelled 2018-04-17
- Shanahan, Brian NC2018-09-01 active