Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4DC callsign genealogy
Currently held by Cupp, William 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 KX4DC's current licensee, walking backwards.
- Cupp, William DALgranted 2014-03-07cancelled 2015-05-05
Successor callsigns
Callsigns held now by people who previously held KX4DC.
No current licensee on record previously held this callsign.