Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8MDX callsign genealogy
Currently held by MODOCK DX CLUB
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 K8MDX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K8MDX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8MDX, oldest first.
- MODOCK DX CLUB OH1998-07-22 → cancelled 1999-11-18
- Cooper, Colin E OH2024-09-24 active