Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA9CRU callsign genealogy
Currently held by KOOYENGA, HENRY 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 KA9CRU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KA9CRU.
No current licensee on record previously held this callsign.