Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8THO callsign genealogy
Currently held by HOLDEMAN, JOSEPH W
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 K8THO's current licensee, walking backwards.
- Thorner, ChristopherOHgranted 2022-09-17cancelled 2022-10-07
Successor callsigns
Callsigns held now by people who previously held K8THO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8THO, oldest first.
- HOLDEMAN, JOSEPH W OH2005-04-20 → cancelled 2017-01-31
- Thorner, Christopher OH2022-10-07 active