Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JDK callsign genealogy
Currently held by Gudewicz, David L
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 K9JDK's current licensee, walking backwards.
- GUDEWICZ, DAVID Lcancelled 1998-10-05
Successor callsigns
Callsigns held now by people who previously held K9JDK.
No current licensee on record previously held this callsign.