Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7JA callsign genealogy
Currently held by Isenberg, Allan D
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 AC7JA's current licensee, walking backwards.
- ISENBERG, ALLAN DAZgranted 1999-01-19cancelled 2000-08-22
Successor callsigns
Callsigns held now by people who previously held AC7JA.
- Isenberg, Allan DAZgranted 2018-09-01