Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9THC callsign genealogy
Currently held by SEIDEL, JEFF
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 K9THC's current licensee, walking backwards.
- WHITESIDE, TYLERORgranted 2019-12-20cancelled 2021-10-30
Successor callsigns
Callsigns held now by people who previously held K9THC.
- SEIDEL, JEFFILgranted 2019-10-11cancelled 2020-02-21
All historical holders
Every license row we've seen with the callsign K9THC, oldest first.
- BUTTITTA SR, SEVEN J IL2006-05-04 → cancelled 2018-07-31
- SEIDEL, JEFF IL2019-08-09 → cancelled 2019-10-11
- Whiteside, Tyler OR2021-10-30 active