Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8MDS callsign genealogy
Currently held by SPARKS, MARVIN 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 K8MDS's current licensee, walking backwards.
- SPARKS, MARVIN DOHgranted 2015-08-20cancelled 2021-10-26
Successor callsigns
Callsigns held now by people who previously held K8MDS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8MDS, oldest first.
- Severt, Mark D OH2008-06-06 → cancelled 2020-06-09
- SPARKS, MARVIN D OH2021-10-26 active