Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N8SGD callsign genealogy
Currently held by COBURN, MARK E
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 N8SGD's current licensee, walking backwards.
- Decapite, Steven GOHgranted 2010-06-25cancelled 2011-12-24
Successor callsigns
Callsigns held now by people who previously held N8SGD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N8SGD, oldest first.
- COBURN, MARK E WV1992-02-25 → cancelled 2004-02-26
- Decapite, Steven G OH2021-11-10 active