Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CDK callsign genealogy
Currently held by DE KOK, CHRISTIAN
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 W9CDK's current licensee, walking backwards.
- DE KOK, CHRISTIANILgranted 2017-03-10cancelled 2017-06-23
Successor callsigns
Callsigns held now by people who previously held W9CDK.
No current licensee on record previously held this callsign.