Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8DSD callsign genealogy
Currently held by SEMKO, DAVID 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 K8DSD's current licensee, walking backwards.
- SEMKO, DAVID DOHgranted 2022-12-13cancelled 2023-01-24
Successor callsigns
Callsigns held now by people who previously held K8DSD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8DSD, oldest first.
- CROSS JR, TOM OH2007-05-30 → cancelled 2019-07-24
- SEMKO, DAVID D OH2023-01-24 active