Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4MC callsign genealogy
Currently held by Markum, Gary V
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 AI4MC's current licensee, walking backwards.
- Markum, Gary VVAgranted 2002-10-29cancelled 2005-09-17
Successor callsigns
Callsigns held now by people who previously held AI4MC.
No current licensee on record previously held this callsign.