Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4ZX callsign genealogy
Currently held by Penney, David R
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 KX4ZX's current licensee, walking backwards.
- Penney, David RFLgranted 2016-10-06cancelled 2020-07-24
Successor callsigns
Callsigns held now by people who previously held KX4ZX.
No current licensee on record previously held this callsign.