Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8OB callsign genealogy
Currently held by LUDDINGTON, WILLIAM J
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 K8OB's current licensee, walking backwards.
- LUDDINGTON, WILLIAM JMIgranted 2019-05-15cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held K8OB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8OB, oldest first.
- THOMPSON, ROBERT M OH2008-09-20 → cancelled 2020-12-10
- LUDDINGTON, WILLIAM J MI2020-12-29 active