Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2JRZ callsign genealogy
Currently held by Duff, Thomas 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 K2JRZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K2JRZ.
No current licensee on record previously held this callsign.