Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ9ZAP callsign genealogy
Currently held by Petzel, Christopher 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 KZ9ZAP's current licensee, walking backwards.
- Petzel, Christopher AINgranted 2021-08-24cancelled 2021-09-14
Successor callsigns
Callsigns held now by people who previously held KZ9ZAP.
No current licensee on record previously held this callsign.