Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4ZD callsign genealogy
Currently held by Dill, Zach
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 AI4ZD's current licensee, walking backwards.
- Dill, ZachNCgranted 2025-04-11cancelled 2025-08-22
Successor callsigns
Callsigns held now by people who previously held AI4ZD.
- KUHN JR, FREDERICK BCOgranted 2017-10-06
All historical holders
Every license row we've seen with the callsign AI4ZD, oldest first.
- KUHN JR, FREDERICK B UT2017-04-21 → cancelled 2017-10-06
- Dill, Zach NC2025-08-22 active