Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7MU callsign genealogy
Currently held by Penney, Douglas 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 AC7MU's current licensee, walking backwards.
- Penney, Douglas AAZgranted 1999-07-26cancelled 2001-04-12
Successor callsigns
Callsigns held now by people who previously held AC7MU.
- Penney Mr., Douglas AAZgranted 2021-05-21