Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9UH callsign genealogy
Currently held by Williams, David T
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 K9UH's current licensee, walking backwards.
- Williams, David TILgranted 2002-02-13cancelled 2006-09-15
Successor callsigns
Callsigns held now by people who previously held K9UH.
- Geiger, Jeffrey RCOgranted 2024-07-02
All historical holders
Every license row we've seen with the callsign K9UH, oldest first.
- Geiger, Jeffrey R CO2003-09-09 → cancelled 2004-08-24
- Williams, David T IL2016-09-13 active