Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8MDG callsign genealogy
Currently held by GIERHART, 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 W8MDG's current licensee, walking backwards.
- GIERHART, MARK DOHgranted 2002-11-27cancelled 2011-11-04
- KD9ZDno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W8MDG.
No current licensee on record previously held this callsign.