Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N8GFZ callsign genealogy
Currently held by KOSKO SR, JOSEPH M
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 N8GFZ's current licensee, walking backwards.
- Zydek, Gerald FMIgranted 2020-04-24cancelled 2020-05-12
Successor callsigns
Callsigns held now by people who previously held N8GFZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N8GFZ, oldest first.
- KOSKO SR, JOSEPH M OH2004-10-19 → cancelled 2016-11-01
- Zydek, Gerald F MI2020-05-12 active