Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KR4FF callsign genealogy
Currently held by FELCH III, RAYMOND F
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 KR4FF's current licensee, walking backwards.
- Felch III, Raymond FIAgranted 2024-12-10cancelled 2024-12-28
Successor callsigns
Callsigns held now by people who previously held KR4FF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR4FF, oldest first.
- FELCH III, RAYMOND F FL1993-10-05 → cancelled 2005-10-06
- Felch III, Raymond F IA2024-12-28 active