Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA9AH callsign genealogy
Currently held by HEISE, AARON 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 AA9AH's current licensee, walking backwards.
- HEISE, AARON JWIgranted 2017-06-13cancelled 2019-03-12
Successor callsigns
Callsigns held now by people who previously held AA9AH.
- MC CLAIN, JOHN WINgranted 2001-02-06cancelled 2013-02-07
All historical holders
Every license row we've seen with the callsign AA9AH, oldest first.
- MC CLAIN, JOHN W IN1991-04-23 → cancelled 2001-02-06
- HEISE, AARON J OH2019-03-12 active