Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KV4OY callsign genealogy
Currently held by BLACK, JOEL B
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 KV4OY's current licensee, walking backwards.
- BLACK, JOEL BALgranted 2023-05-31
Successor callsigns
Callsigns held now by people who previously held KV4OY.
- BLACK, JOEL BALgranted 2023-05-31