Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0FXR callsign genealogy
Currently held by Mathews IV, Theodore 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 KD0FXR's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KD0FXR.
- Mathews IV, Theodore WMDgranted 2019-08-02