Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ3O callsign genealogy
Currently held by ROBISON, ARLIN 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 KZ3O's current licensee, walking backwards.
- Miller, Randall JPAgranted 2020-02-24cancelled 2024-01-06
Successor callsigns
Callsigns held now by people who previously held KZ3O.
- Mignone, Mike RPAgranted 2021-10-05
All historical holders
Every license row we've seen with the callsign KZ3O, oldest first.
- ROBISON, ARLIN L AZ1993-01-19 → cancelled 2005-01-20
- Mignone, Mike R PA2018-03-28 → cancelled 2021-10-05
- Miller, Randall J PA2024-01-06 active