Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA9YN callsign genealogy
Currently held by Hollas, 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 AA9YN's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AA9YN.
- Hollas, Ronald JOHgranted 2016-11-15