Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4AU callsign genealogy
Currently held by Bosard, Carl E
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 AJ4AU's current licensee, walking backwards.
- Bosard, Carl ESCgranted 2007-05-22cancelled 2007-07-24
Successor callsigns
Callsigns held now by people who previously held AJ4AU.
- Bosard, Carl ESCgranted 2022-04-12