Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7TGX callsign genealogy
Currently held by TOPHAM, MICHAEL 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 N7TGX's current licensee, walking backwards.
- Grate, Thomas AAZgranted 2022-05-03cancelled 2025-03-28
Successor callsigns
Callsigns held now by people who previously held N7TGX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7TGX, oldest first.
- TOPHAM, MICHAEL J UT2002-07-31 → cancelled 2014-08-01
- Grate, Thomas A AZ2025-03-28 active