Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4UD callsign genealogy
Currently held by Esposito II, Stephen J
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 KX4UD's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KX4UD.
- Esposito II, Stephen JGAgranted 2019-09-24