Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3JDK callsign genealogy
Currently held by Kramer, J.D.
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 W3JDK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W3JDK.
No current licensee on record previously held this callsign.