Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3GRO callsign genealogy
Currently held by Tiemann, William A
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 N3GRO's current licensee, walking backwards.
- Tiemann, William ACAgranted 2000-08-15cancelled 2001-08-31
Successor callsigns
Callsigns held now by people who previously held N3GRO.