Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK9AXL callsign genealogy
Currently held by Heinrich, Alan
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 KK9AXL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KK9AXL.
No current licensee on record previously held this callsign.