Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4GEM callsign genealogy
Currently held by CORBETT, MARC 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 KD4GEM's current licensee, walking backwards.
- Mount, Gary ETNgranted 2025-08-13cancelled 2025-09-03
Successor callsigns
Callsigns held now by people who previously held KD4GEM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4GEM, oldest first.
- CORBETT, MARC D NC1995-07-25 → cancelled 2003-10-23
- Mount, Gary E TN2025-09-03 active