Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4HK callsign genealogy
Currently held by TRUETT, 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 AI4HK's current licensee, walking backwards.
- TRUETT, MARK AALgranted 2004-02-20cancelled 2004-09-24
Successor callsigns
Callsigns held now by people who previously held AI4HK.
No current licensee on record previously held this callsign.