Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA9HD callsign genealogy
Currently held by CIESLAK, CHRISTOPHER 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 AA9HD's current licensee, walking backwards.
- N9QODno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AA9HD.
- CIESLAK, CHRISTOPHER JILgranted 2021-04-02