Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4US callsign genealogy
Currently held by Mientus, John A
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 AJ4US's current licensee, walking backwards.
- Mientus, John ANCgranted 2009-12-22cancelled 2009-12-29
Successor callsigns
Callsigns held now by people who previously held AJ4US.
No current licensee on record previously held this callsign.