Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8MDG callsign genealogy
Currently held by GELSTEIN, MARK 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 K8MDG's current licensee, walking backwards.
- GELSTEIN, MARK DMIgranted 2024-09-18cancelled 2025-12-23
Successor callsigns
Callsigns held now by people who previously held K8MDG.
No current licensee on record previously held this callsign.