Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4LIF callsign genealogy
Currently held by Bigio, Ruth A
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 KB4LIF's current licensee, walking backwards.
- Butterfield, Kent AAZgranted 2023-03-15cancelled 2023-04-08
Successor callsigns
Callsigns held now by people who previously held KB4LIF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4LIF, oldest first.
- Bigio, Ruth A VA2005-10-04 → cancelled 2017-10-28
- Butterfield, Kent A KS2023-04-08 active