Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NU9M callsign genealogy
Currently held by MOZINGO, RICHARD L
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 NU9M's current licensee, walking backwards.
- Yudkowsky, Michael AILgranted 2019-04-18cancelled 2019-08-17
Successor callsigns
Callsigns held now by people who previously held NU9M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NU9M, oldest first.
- MOZINGO, RICHARD L IN2007-05-05 → cancelled 2019-07-30
- Yudkowsky, Michael A IL2019-08-17 active