Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4BF callsign genealogy
Currently held by WARLICK, MICHAEL K
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 AI4BF's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AI4BF.
No current licensee on record previously held this callsign.