Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9OD callsign genealogy
Currently held by Osborne, David S
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 AC9OD's current licensee, walking backwards.
- Osborne, David SINgranted 2015-10-27cancelled 2016-04-11
Successor callsigns
Callsigns held now by people who previously held AC9OD.
No current licensee on record previously held this callsign.