Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU8K callsign genealogy
Currently held by KOELKER, RICHARD 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 KU8K's current licensee, walking backwards.
- TRINKLE, WILLIAM RMIgranted 2011-04-15cancelled 2013-03-19
Successor callsigns
Callsigns held now by people who previously held KU8K.
- Turske, Richard LOHgranted 2010-02-26cancelled 2010-06-29
All historical holders
Every license row we've seen with the callsign KU8K, oldest first.
- KOELKER, RICHARD L OH1997-01-07 → cancelled 2009-01-08
- Turske, Richard L OH2010-01-22 → cancelled 2010-02-26
- TRINKLE, WILLIAM R FL2022-12-22 active