Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1JLC callsign genealogy
Currently held by COOK, JON 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 K1JLC's current licensee, walking backwards.
- Cattaneo, JamesMAgranted 2016-03-17cancelled 2016-04-05
Successor callsigns
Callsigns held now by people who previously held K1JLC.
- Cattaneo, JamesMAgranted 2020-06-01
All historical holders
Every license row we've seen with the callsign K1JLC, oldest first.
- COOK, JON L MD2002-05-17 → cancelled 2014-05-20
- Cattaneo, James MA2016-04-05 → cancelled 2020-06-01