Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5ZAU callsign genealogy
Currently held by GREER, WILLIAM D
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 N5ZAU's current licensee, walking backwards.
- GARCIA, CYNTHIA KTXgranted 2018-04-30cancelled 2023-11-07
Successor callsigns
Callsigns held now by people who previously held N5ZAU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5ZAU, oldest first.
- GREER, WILLIAM D MS2012-11-27 → cancelled 2021-11-17
- Garcia, Cynthia K TX2023-11-07 active