Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4DGF callsign genealogy
Currently held by BIELEFELD, JOHN E
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 KA4DGF'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 KA4DGF.
- Bielefeld, John EMAgranted 1994-12-09cancelled 2000-03-03