Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZOR callsign genealogy
Currently held by McCook, Corey 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 K4ZOR's current licensee, walking backwards.
- Brill, RogerGAgranted 2023-11-14cancelled 2023-12-05
Successor callsigns
Callsigns held now by people who previously held K4ZOR.
- McCook, Corey JVAgranted 2018-03-03
All historical holders
Every license row we've seen with the callsign K4ZOR, oldest first.
- McCook, Corey J VA2018-02-13 → cancelled 2018-03-03
- Brill, Roger GA2023-12-05 active