Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9PTZ callsign genealogy
Currently held by Petruzzelli, Mark
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 K9PTZ's current licensee, walking backwards.
- Petruzzelli, MarkIDgranted 2022-04-04cancelled 2022-04-22
Successor callsigns
Callsigns held now by people who previously held K9PTZ.
No current licensee on record previously held this callsign.