Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU9M callsign genealogy
Currently held by SHERWOOD, DONALD C
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 KU9M's current licensee, walking backwards.
- SHOOK, MICHAEL AILgranted 2010-06-29cancelled 2013-03-19
Successor callsigns
Callsigns held now by people who previously held KU9M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU9M, oldest first.
- SHERWOOD, DONALD C IL1997-10-23 → cancelled 2009-10-24
- SHOOK, MICHAEL A VA2023-03-02 active