Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5GZF callsign genealogy
Currently held by Grizzaffi, JOHN R
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 K5GZF's current licensee, walking backwards.
- WRIGHT, JOHN RTXgranted 2009-11-19cancelled 2009-12-08
Successor callsigns
Callsigns held now by people who previously held K5GZF.
No current licensee on record previously held this callsign.