Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9WJW callsign genealogy
Currently held by WELCENBACH, WARREN 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 N9WJW's current licensee, walking backwards.
- WELCENBACH, WARREN JWIgranted 2013-07-24cancelled 2015-08-01
Successor callsigns
Callsigns held now by people who previously held N9WJW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9WJW, oldest first.
- BARTELL, RUSSELL J WI1994-07-19 → cancelled 2006-03-30
- WELCENBACH, WARREN J WI2025-08-15 active