Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4NF callsign genealogy
Currently held by Williams Jr, Harold Vic
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 KR4NF's current licensee, walking backwards.
- Williams Jr, Harold VicVAgranted 2025-09-16cancelled 2025-12-12
Successor callsigns
Callsigns held now by people who previously held KR4NF.
- WILLIAMS JR, HAROLD VVAgranted 1999-03-25cancelled 2011-03-26
All historical holders
Every license row we've seen with the callsign KR4NF, oldest first.
- Williams Jr, Harold Vic VA2025-12-12 active
- WILLIAMS JR, HAROLD V— → cancelled 1999-03-25