Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9HE callsign genealogy
Currently held by RICHARDSON, MARK 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 AC9HE's current licensee, walking backwards.
- Richardson, Mark AILgranted 2005-03-15cancelled 2014-01-16
Successor callsigns
Callsigns held now by people who previously held AC9HE.
No current licensee on record previously held this callsign.