Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI6ZM callsign genealogy
Currently held by Derstepanian, Robert
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 AI6ZM's current licensee, walking backwards.
- Derstepanian, RobertCAgranted 2017-03-20cancelled 2017-10-23
Successor callsigns
Callsigns held now by people who previously held AI6ZM.
- Derstepanian, RobertCAgranted 2018-01-05