Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0KCA callsign genealogy
Currently held by Eigsti, Jacob H
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 K0KCA's current licensee, walking backwards.
- Eigsti, Jacob HCOgranted 2025-05-13cancelled 2026-08-22
Successor callsigns
Callsigns held now by people who previously held K0KCA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0KCA, oldest first.
- HAMANN, EUGENE E AZ2014-05-23 → cancelled 2026-07-17
- Eigsti, Jacob H CO2026-08-22 active