Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9YM callsign genealogy
Currently held by ADAS, MICHAEL J
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 K9YM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K9YM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9YM, oldest first.
- ADAS, MICHAEL J WI2000-07-08 → cancelled 2012-07-10
- LEWIS, DAVID O IL2022-05-24 active