Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NU9W callsign genealogy
Currently held by STAMM, FREDERICK K
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 NU9W's current licensee, walking backwards.
- Becker, PeterINgranted 2013-04-09cancelled 2013-10-17
Successor callsigns
Callsigns held now by people who previously held NU9W.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NU9W, oldest first.
- STAMM, FREDERICK K IL1987-09-29 → cancelled 1999-09-30
- Becker, Peter IN2023-10-17 active