Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6UI callsign genealogy
Currently held by ADEY, WILLIAM R
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 K6UI's current licensee, walking backwards.
- Gutwirth, Joseph MCAgranted 2002-02-05cancelled 2007-08-07
Successor callsigns
Callsigns held now by people who previously held K6UI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6UI, oldest first.
- ADEY, WILLIAM R CA1996-12-09 → cancelled 2004-05-20
- Gutwirth, Joseph M CA2017-05-12 active