Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4OU callsign genealogy
Currently held by Crouse, James M
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 AJ4OU's current licensee, walking backwards.
- Crouse, James MTNgranted 2002-12-11cancelled 2009-03-06
Successor callsigns
Callsigns held now by people who previously held AJ4OU.
No current licensee on record previously held this callsign.