Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9YZ callsign genealogy
Currently held by Swiss, Tom
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 N9YZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N9YZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9YZ, oldest first.
- Vollmann III, George IN2013-03-29 → cancelled 2025-06-17
- Swiss, Tom IL2025-07-05 active