Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO6DF callsign genealogy
Currently held by SUMNER, GARY 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 KO6DF's current licensee, walking backwards.
- KD6GXKno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KO6DF.
- SUMNER, GARY WCAgranted 2000-07-07cancelled 2006-05-05