Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0JFK callsign genealogy
Currently held by Martin, Thomas A
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 KC0JFK's current licensee, walking backwards.
- Martin, Thomas AMOgranted 2019-11-27cancelled 2022-01-14
Successor callsigns
Callsigns held now by people who previously held KC0JFK.
All historical holders
Every license row we've seen with the callsign KC0JFK, oldest first.
- Martin, Thomas A MO2000-11-28 → cancelled 2000-12-19
- Martin, Thomas A MO2022-01-14 → cancelled 2022-06-07