Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MDG callsign genealogy
Currently held by Gillam, 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 K4MDG's current licensee, walking backwards.
- Gillam, Mark DVAgranted 1993-09-21cancelled 2003-06-17
- WD6ABEno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K4MDG.
No current licensee on record previously held this callsign.