Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7OSU callsign genealogy
Currently held by WANNER, THOMAS M
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 N7OSU's current licensee, walking backwards.
- Emery, Denise OORgranted 2002-12-13cancelled 2006-06-24
Successor callsigns
Callsigns held now by people who previously held N7OSU.
- WANNER, THOMAS MORgranted 2003-05-28cancelled 2015-05-29
All historical holders
Every license row we've seen with the callsign N7OSU, oldest first.
- WANNER, THOMAS M OR2000-10-12 → cancelled 2003-05-28
- EMERY, DENISE O OR2026-04-22 active