Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0WPM callsign genealogy
Currently held by Western Kansas ARC
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 K0WPM's current licensee, walking backwards.
- KE0GGFcancelledWestern Kansas ARCKSgranted 2015-10-28cancelled 2016-07-06
Successor callsigns
Callsigns held now by people who previously held K0WPM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0WPM, oldest first.
- MATTHES, WILLIAM P KS2009-04-03 → cancelled 2014-04-03
- Western Kansas ARC KS2016-02-23 → cancelled 2016-03-04
- Western Kansas ARC KS2026-05-22 active