Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4WIZ callsign genealogy
Currently held by McCool, Thomas J
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 KB4WIZ's current licensee, walking backwards.
- McCool, Thomas JFLgranted 2019-10-22cancelled 2019-12-13
Successor callsigns
Callsigns held now by people who previously held KB4WIZ.
No current licensee on record previously held this callsign.