Confidence: Medium · Source: FCC ULS · As of 2026-09-11
K4TYZ callsign genealogy
Currently held by MC GINLEY, JOHN 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 K4TYZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4TYZ.
- MC GINLEY, JOHN LAZgranted 2008-03-08cancelled 2012-03-31
All historical holders
Every license row we've seen with the callsign K4TYZ, oldest first.
- MC GINLEY, JOHN L AZ2022-02-07 active
- MC GINLEY, JOHN L— → cancelled 1998-05-29