Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9NYU callsign genealogy
Currently held by Johnson, Michael P
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 W9NYU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W9NYU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9NYU, oldest first.
- Keutzer, Donald E IN2010-10-07 → cancelled 2022-10-08
- Johnson, Michael P WI2025-04-29 active