Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4ZS callsign genealogy
Currently held by McGowan, John
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 KY4ZS's current licensee, walking backwards.
- McGowan, JohnNCgranted 2023-06-06cancelled 2023-08-07
Successor callsigns
Callsigns held now by people who previously held KY4ZS.
No current licensee on record previously held this callsign.