Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AC7OJ callsign genealogy
Currently held by Van Alstein, Byron 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 AC7OJ's current licensee, walking backwards.
- Van Alstein, Byron MMTgranted 2000-06-16cancelled 2001-08-06
Successor callsigns
Callsigns held now by people who previously held AC7OJ.
- Van Alstein, Byron MMTgranted 2021-09-23