Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4BSL callsign genealogy
Currently held by Simpson, 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 KY4BSL's current licensee, walking backwards.
- Simpson, John WKYgranted 2018-01-25cancelled 2018-02-13
Successor callsigns
Callsigns held now by people who previously held KY4BSL.
No current licensee on record previously held this callsign.