Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6DBI callsign genealogy
Currently held by Bisterfeldt, Dean 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 K6DBI's current licensee, walking backwards.
- Clothier, John WCAgranted 2017-01-06cancelled 2018-06-23
Successor callsigns
Callsigns held now by people who previously held K6DBI.
- Bisterfeldt, Dean RCAgranted 2024-09-13
All historical holders
Every license row we've seen with the callsign K6DBI, oldest first.
- YORK, MELVIN M NV1988-03-22 → cancelled 2000-03-23
- Bisterfeldt, Dean R CA2014-09-23 → cancelled 2014-11-11
- Clothier, John W CA2018-06-23 active