Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4IZT callsign genealogy
Currently held by Mountain Amateur Radio Contest Org
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 W4IZT's current licensee, walking backwards.
- KI4SPEcancelledMountain Amateur Radio Contest OrgGAgranted 2006-12-12cancelled 2007-02-08
Successor callsigns
Callsigns held now by people who previously held W4IZT.
- K4UEEactiveMountain Amateur Radio Contest OrgGAgranted 2026-04-11