Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7TNS callsign genealogy
Currently held by Surbrook, Tom N
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 K7TNS's current licensee, walking backwards.
- Surbrook, Thomas NWAgranted 2013-03-26cancelled 2013-04-13
Successor callsigns
Callsigns held now by people who previously held K7TNS.
- WINDER, GERALD PAZgranted 2012-01-11cancelled 2014-10-24
All historical holders
Every license row we've seen with the callsign K7TNS, oldest first.
- WINDER, GERALD P AZ1999-02-10 → cancelled 2002-04-09
- Surbrook, Tom N AZ2023-01-20 active