Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6OQO callsign genealogy
Currently held by PATTON, WILLARD H
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 K6OQO's current licensee, walking backwards.
- YU, JACK JCAgranted 2005-07-13cancelled 2005-08-12
Successor callsigns
Callsigns held now by people who previously held K6OQO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6OQO, oldest first.
- PATTON, WILLARD H CA1992-09-29 → cancelled 2004-09-30
- YU, JACK J CA2025-06-12 active