Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0SDM callsign genealogy
Currently held by MILLER, STEW 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 KC0SDM's current licensee, walking backwards.
- MILLER, STEW DMOgranted 2024-04-10cancelled 2024-04-30
Successor callsigns
Callsigns held now by people who previously held KC0SDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0SDM, oldest first.
- Clark, Myrna D KS2004-04-15 → cancelled 2016-04-16
- MILLER, STEW D MO2024-04-30 active