Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4YM callsign genealogy
Currently held by Styron, April D
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 KZ4YM's current licensee, walking backwards.
- Bradbury, April DVAgranted 2024-12-27cancelled 2025-12-15
Successor callsigns
Callsigns held now by people who previously held KZ4YM.
No current licensee on record previously held this callsign.