Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4R callsign genealogy
Currently held by DU PONT, ROBERT G
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 KF4R's current licensee, walking backwards.
- AB4ZNcancelledcancelled 1999-02-26
Successor callsigns
Callsigns held now by people who previously held KF4R.
No current licensee on record previously held this callsign.