Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4N callsign genealogy
Currently held by CARMAN, MICHAEL S
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 AJ4N's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AJ4N.
- CARMAN, MICHAEL SFLgranted 2019-04-17
All historical holders
Every license row we've seen with the callsign AJ4N, oldest first.
- ASPINWALL, JOSEPH R AL2021-04-02 active
- CARMAN, MICHAEL S— → cancelled 1999-05-26