Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JAX callsign genealogy
Currently held by Bottorf, Jack K
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 KC0JAX's current licensee, walking backwards.
- Bottorf, Jack KCOgranted 2016-01-28cancelled 2016-02-17
Successor callsigns
Callsigns held now by people who previously held KC0JAX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0JAX, oldest first.
- Shapiro, Maureen C CO2000-10-27 → cancelled 2012-10-30
- Bottorf, Jack K CO2016-02-17 active