Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NT7Z callsign genealogy
Currently held by BUHLER, CALVIN
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 NT7Z's current licensee, walking backwards.
- Buhler, Bruce CCAgranted 2012-02-28cancelled 2018-08-24
Successor callsigns
Callsigns held now by people who previously held NT7Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NT7Z, oldest first.
- BUHLER, CALVIN UT2017-01-31 → cancelled 2018-02-15
- Buhler, Bruce C CA2018-08-24 active