Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RCO callsign genealogy
Currently held by JOHNSON SR, JIMMY W
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 K4RCO's current licensee, walking backwards.
- JOHNSON SR, JIMMY WFLgranted 1996-06-03cancelled 2000-01-14
Successor callsigns
Callsigns held now by people who previously held K4RCO.
No current licensee on record previously held this callsign.