Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7TZZ callsign genealogy
Currently held by HOLTHAUS, TERRY H
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 N7TZZ's current licensee, walking backwards.
- HOLTHAUS, TERRY HMTgranted 2013-12-03cancelled 2014-10-07
Successor callsigns
Callsigns held now by people who previously held N7TZZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7TZZ, oldest first.
- WILLIAMS, EDWARD H OR2002-08-22 → cancelled 2013-09-11
- HOLTHAUS, TERRY H MT2014-10-07 active