Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4ZP callsign genealogy
Currently held by Downs, Matthew C
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 KY4ZP's current licensee, walking backwards.
- Downs, Matthew CVAgranted 2023-06-22cancelled 2023-07-20
Successor callsigns
Callsigns held now by people who previously held KY4ZP.
- Downs, Matthew CVAgranted 2024-04-27