Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4IZZ callsign genealogy
Currently held by CHERRY, PATRICK 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 K4IZZ's current licensee, walking backwards.
- LIBRIZZI, DAVIDSCgranted 2011-10-20cancelled 2013-01-01
Successor callsigns
Callsigns held now by people who previously held K4IZZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4IZZ, oldest first.
- CHERRY, PATRICK R FL1995-05-03 → cancelled 2007-05-04
- LIBRIZZI, DAVID SC2022-10-05 active