Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4FL callsign genealogy
Currently held by Sacco, Robert J
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 WB4FL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WB4FL.
No current licensee on record previously held this callsign.