Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4JRC callsign genealogy
Currently held by Rudd, David P
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 KC4JRC's current licensee, walking backwards.
- Rudd, David PCAgranted 2018-03-14cancelled 2018-08-10
Successor callsigns
Callsigns held now by people who previously held KC4JRC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4JRC, oldest first.
- SWARTZ JR, CHARLES E FL1989-03-28 → cancelled 2001-03-29
- Rudd, David P CA2018-08-10 active