Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4TZY callsign genealogy
Currently held by JOHNSTON, JOHNNY
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 KI4TZY's current licensee, walking backwards.
- JOHNSTON, JOHNNYSCgranted 2007-02-21cancelled 2007-03-05
Successor callsigns
Callsigns held now by people who previously held KI4TZY.
- JOHNSTON, JOHNNYSCgranted 2017-12-19