Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9AOC callsign genealogy
Currently held by Zhu, Zhongmin
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 N9AOC's current licensee, walking backwards.
- Zhu, ZhongminILgranted 2018-12-14cancelled 2019-01-01
Successor callsigns
Callsigns held now by people who previously held N9AOC.
- SHEETS, LAURENCE LINgranted 2021-04-26
All historical holders
Every license row we've seen with the callsign N9AOC, oldest first.
- SHEETS, LAURENCE L IA2001-06-19 → cancelled 2001-07-17
- Zhu, Zhongmin IL2019-01-01 active