Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7DD callsign genealogy
Currently held by DULL, DAVID R
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 AC7DD's current licensee, walking backwards.
- DULL, DAVID RAZgranted 2014-02-05cancelled 2020-02-08
Successor callsigns
Callsigns held now by people who previously held AC7DD.
- OTNES, SUZANNE MORgranted 2023-09-29
All historical holders
Every license row we've seen with the callsign AC7DD, oldest first.
- Otnes, Suzanne M OR2000-02-08 → cancelled 2003-01-22
- DULL, DAVID R AZ2020-02-08 active