Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4CPZ callsign genealogy
Currently held by Haywood, Matthew L
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 K4CPZ's current licensee, walking backwards.
- Haywood, Matthew LFLgranted 2016-08-09cancelled 2021-11-02
Successor callsigns
Callsigns held now by people who previously held K4CPZ.
No current licensee on record previously held this callsign.