Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4WSD callsign genealogy
Currently held by LYONS, BART R
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 KF4WSD's current licensee, walking backwards.
- Lyons, Bart RFLgranted 2020-02-05cancelled 2020-02-25
Successor callsigns
Callsigns held now by people who previously held KF4WSD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4WSD, oldest first.
- LYONS, BART R FL1998-03-31 → cancelled 2010-04-01
- Lyons, Bart R FL2020-02-25 active