Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JCP callsign genealogy
Currently held by MOORE III, WILLIAM 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 K4JCP's current licensee, walking backwards.
- Plemons Jr, Joseph CFLgranted 1999-03-24cancelled 2006-02-10
Successor callsigns
Callsigns held now by people who previously held K4JCP.
- MOORE III, WILLIAM FFLgranted 2023-10-31
All historical holders
Every license row we've seen with the callsign K4JCP, oldest first.
- MOORE III, WILLIAM F FL1997-08-22 → cancelled 2004-01-21
- PLEMONS JR, JOSEPH C GA2025-12-30 active