Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC2IL callsign genealogy
Currently held by Koestler, James R
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 AC2IL's current licensee, walking backwards.
- Koestler, James RNYgranted 2012-03-23cancelled 2012-04-20
Successor callsigns
Callsigns held now by people who previously held AC2IL.
No current licensee on record previously held this callsign.