Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4STS callsign genealogy
Currently held by GARRETT, MICHAEL W
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 N4STS's current licensee, walking backwards.
- DUFFANY, ROBERT JNCgranted 2024-04-03cancelled 2024-04-23
Successor callsigns
Callsigns held now by people who previously held N4STS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4STS, oldest first.
- GARRETT, MICHAEL W TN2010-06-23 → cancelled 2022-07-26
- DUFFANY, ROBERT J NC2024-04-23 active