Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9XO callsign genealogy
Currently held by Landgraf, Scott 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 AC9XO's current licensee, walking backwards.
- Landgraf, Scott DILgranted 2018-11-29cancelled 2020-10-13
Successor callsigns
Callsigns held now by people who previously held AC9XO.
No current licensee on record previously held this callsign.