Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB6FB callsign genealogy
Currently held by KNUTSON, JOHN W
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 AB6FB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AB6FB.
No current licensee on record previously held this callsign.