Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4CLC callsign genealogy
Currently held by COSTINE, CHRISTOPHER L
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 K4CLC's current licensee, walking backwards.
- LO, CIEGAgranted 2020-10-06cancelled 2020-10-24
Successor callsigns
Callsigns held now by people who previously held K4CLC.
- COSTINE, CHRISTOPHER LFLgranted 2024-11-02
All historical holders
Every license row we've seen with the callsign K4CLC, oldest first.
- COSTINE, CHRISTOPHER L FL2012-05-25 → cancelled 2014-11-25
- LO, CIE GA2020-10-24 active