Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9NAZ callsign genealogy
Currently held by PIEPGRAS, JOHN J
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 W9NAZ's current licensee, walking backwards.
- Piechowski, Nolan JWIgranted 2024-12-27cancelled 2025-02-14
Successor callsigns
Callsigns held now by people who previously held W9NAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9NAZ, oldest first.
- PIEPGRAS, JOHN J IL1997-08-25 → cancelled 2009-08-26
- Piechowski, Nolan J WI2025-02-14 active