Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9DMW callsign genealogy
Currently held by RUZICK, JOHN
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 K9DMW's current licensee, walking backwards.
- Wiseman, Donald MINgranted 2016-02-25cancelled 2021-01-05
Successor callsigns
Callsigns held now by people who previously held K9DMW.
- WHALEY, DAVID MILgranted 2017-12-06
All historical holders
Every license row we've seen with the callsign K9DMW, oldest first.
- RUZICK, JOHN IL1995-05-16 → cancelled 2007-05-17
- WHALEY, DAVID M IL2007-06-19 → cancelled 2008-03-04
- Wiseman, Donald M IN2021-01-05 active