Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ9ZZ callsign genealogy
Currently held by GS QSL Service
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 KZ9ZZ's current licensee, walking backwards.
- ZNAVOR, DAVID SILgranted 2008-03-21cancelled 2014-11-04
Successor callsigns
Callsigns held now by people who previously held KZ9ZZ.
- K9MVScancelledGS QSL ServiceWIgranted 2007-11-17cancelled 2008-04-25
All historical holders
Every license row we've seen with the callsign KZ9ZZ, oldest first.
- GS QSL Service WI2006-12-27 → cancelled 2007-11-17
- ZNAVOR, DAVID S IL2024-10-19 active