Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4CDM callsign genealogy
Currently held by MICHAEL, CHARLES D
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 KA4CDM's current licensee, walking backwards.
- MICHAEL, CHARLES DFLgranted 2020-02-25cancelled 2020-03-28
Successor callsigns
Callsigns held now by people who previously held KA4CDM.
- MICHAEL, CHARLES DFLgranted 2021-01-01cancelled 2021-02-06