Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DBJ callsign genealogy
Currently held by DeBoer, John 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 W4DBJ's current licensee, walking backwards.
- DeBoer, John RFLgranted 2021-10-04cancelled 2021-10-26
Successor callsigns
Callsigns held now by people who previously held W4DBJ.
- DeBoer, John RFLgranted 2024-03-26