Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1OZ callsign genealogy
Currently held by Quinn, Joseph
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 K1OZ's current licensee, walking backwards.
- Quinn, JosephMAgranted 2021-07-01cancelled 2023-02-10
Successor callsigns
Callsigns held now by people who previously held K1OZ.
- Tirado II, JohnnyCTgranted 2018-11-24
All historical holders
Every license row we've seen with the callsign K1OZ, oldest first.
- SPEAR, JAMES R FL2006-08-10 → cancelled 2018-11-06
- Tirado II, Johnny CT2018-11-24 → cancelled 2021-01-22
- Quinn, Joseph MA2023-02-10 active