Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4JCL callsign genealogy
Currently held by LAMPARTER, JEFFREY C
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 KO4JCL's current licensee, walking backwards.
- LAMPARTER, JEFFREY CTNgranted 2019-11-18cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held KO4JCL.
No current licensee on record previously held this callsign.