Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI7DY callsign genealogy
Currently held by KOONTZ, RONALD J
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 AI7DY's current licensee, walking backwards.
- KOONTZ, RONALD JAZgranted 2020-09-28cancelled 2020-11-16
Successor callsigns
Callsigns held now by people who previously held AI7DY.
- KOONTZ, RONALD JAZgranted 2020-12-29