Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA3CA callsign genealogy
Currently held by Armbruster, Andrew P
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 AA3CA's current licensee, walking backwards.
- Armbruster, Andrew PPAgranted 2021-06-30cancelled 2021-12-14
Successor callsigns
Callsigns held now by people who previously held AA3CA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA3CA, oldest first.
- CRAMER, DONALD G MD1992-09-01 → cancelled 2004-09-02
- Armbruster, Andrew P PA2021-12-14 active