Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4JT callsign genealogy
Currently held by Shields, Michael P
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 KZ4JT's current licensee, walking backwards.
- Shields, Michael PFLgranted 2020-11-13cancelled 2024-07-16
Successor callsigns
Callsigns held now by people who previously held KZ4JT.
- Shields, Michael PFLgranted 2024-08-30