Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9TZT callsign genealogy
Currently held by GARRETT, ROBERT R
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 N9TZT's current licensee, walking backwards.
- Garrett, Douglas WILgranted 2008-12-31cancelled 2010-02-27
Successor callsigns
Callsigns held now by people who previously held N9TZT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9TZT, oldest first.
- GARRETT, ROBERT R IL1993-06-08 → cancelled 2005-06-09
- Garrett, Douglas W IN2020-01-03 active