Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0THM callsign genealogy
Currently held by KOHL, DOUGLAS A
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 W0THM's current licensee, walking backwards.
- Wortham, Joshua NOKgranted 2017-11-09cancelled 2018-03-30
Successor callsigns
Callsigns held now by people who previously held W0THM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0THM, oldest first.
- KOHL, DOUGLAS A MN1996-12-19 → cancelled 2008-12-20
- Wortham, Joshua N OK2018-03-30 active