Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7ZAU callsign genealogy
Currently held by ERTELT, HOLLIS C
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 N7ZAU's current licensee, walking backwards.
- Williams, D BrianCAgranted 2002-12-05cancelled 2008-06-20
Successor callsigns
Callsigns held now by people who previously held N7ZAU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7ZAU, oldest first.
- ERTELT, HOLLIS C WA1992-06-09 → cancelled 2004-06-11
- WILLIAMS, D BRIAN CA2018-09-26 active