Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0JOP callsign genealogy
Currently held by DUFNER, CARL 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 W0JOP's current licensee, walking backwards.
- DUFNER, CARL DMOgranted 2015-03-24cancelled 2021-03-12
Successor callsigns
Callsigns held now by people who previously held W0JOP.
No current licensee on record previously held this callsign.