Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO6U callsign genealogy
Currently held by Koger, Jeffrey K
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 WO6U's current licensee, walking backwards.
- Koger, Jeffrey KCAgranted 2002-09-10cancelled 2008-07-19
Successor callsigns
Callsigns held now by people who previously held WO6U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO6U, oldest first.
- PENNINGTON, WALTER B AZ1996-03-14 → cancelled 2008-03-15
- Koger, Jeffrey K CA2018-04-27 active