Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA0A callsign genealogy
Currently held by MC CARTHY, DENNIS 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 AA0A's current licensee, walking backwards.
- Rosebrook, JohnNVgranted 2019-11-26cancelled 2020-05-19
Successor callsigns
Callsigns held now by people who previously held AA0A.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA0A, oldest first.
- MC CARTHY, DENNIS J MO2017-07-21 → cancelled 2018-04-30
- Rosebrook, John SD2020-05-19 active