Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JSL callsign genealogy
Currently held by Spence, Aaron M
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 KC0JSL's current licensee, walking backwards.
- LaRocco, Jeremiah SCOgranted 2021-08-30cancelled 2021-09-21
Successor callsigns
Callsigns held now by people who previously held KC0JSL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0JSL, oldest first.
- Spence, Aaron M MO2001-02-13 → cancelled 2013-02-14
- LaRocco, Jeremiah S CO2021-09-21 active