Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JIM callsign genealogy
Currently held by Leahy, James D
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 KC0JIM's current licensee, walking backwards.
- Leahy, James DCOgranted 2015-02-17cancelled 2015-11-28
Successor callsigns
Callsigns held now by people who previously held KC0JIM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0JIM, oldest first.
- Miron, John MN2000-12-13 → cancelled 2012-12-14
- Leahy, James D CO2025-09-20 active