Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4SW callsign genealogy
Currently held by Cowan, Mike F
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 KY4SW's current licensee, walking backwards.
- Cowan, Mike FTNgranted 2015-08-14cancelled 2022-11-07
Successor callsigns
Callsigns held now by people who previously held KY4SW.
No current licensee on record previously held this callsign.