Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0DKP callsign genealogy
Currently held by Bierwirth, Charles W
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 W0DKP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W0DKP.
No current licensee on record previously held this callsign.