Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6UFO callsign genealogy
Currently held by HEINRICH, MARK D
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 W6UFO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W6UFO.
No current licensee on record previously held this callsign.