Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9KD callsign genealogy
Currently held by Ahrendt, William C
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 AC9KD's current licensee, walking backwards.
- Ahrendt, William CILgranted 2012-04-11cancelled 2014-12-04
Successor callsigns
Callsigns held now by people who previously held AC9KD.
No current licensee on record previously held this callsign.