Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4BF callsign genealogy
Currently held by SWITZER, DON R
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 KU4BF's current licensee, walking backwards.
- KE4ZQTno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KU4BF.
- Switzer, Don RALgranted 1997-01-29cancelled 2000-08-11