Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W6BFK callsign genealogy
Currently held by KOOPMAN, DENNIS E
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 W6BFK's current licensee, walking backwards.
- Koopman, Dennis EFLgranted 2017-09-27cancelled 2019-09-28
Successor callsigns
Callsigns held now by people who previously held W6BFK.
- KOOPMAN, DENNIS EFLgranted 2024-12-10