Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W8SGZ callsign genealogy
Currently held by Zupan, Jeffrey A
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 W8SGZ's current licensee, walking backwards.
- Zupan, Jeffrey AMIgranted 2002-11-27cancelled 2003-03-04
Successor callsigns
Callsigns held now by people who previously held W8SGZ.
No current licensee on record previously held this callsign.