Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JFN callsign genealogy
Currently held by Tuttle, Ronald K
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 KC0JFN's current licensee, walking backwards.
- Nixon, James FKSgranted 2019-03-22cancelled 2020-08-29
Successor callsigns
Callsigns held now by people who previously held KC0JFN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0JFN, oldest first.
- Tuttle, Ronald K CO2000-11-28 → cancelled 2000-12-05
- Nixon, James F KS2020-08-29 active