Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1JON callsign genealogy
Currently held by CIOCCHI, JOHN S
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 K1JON's current licensee, walking backwards.
- CIOCCHI, JOHN SVTgranted 1998-12-01cancelled 2003-07-09
Successor callsigns
Callsigns held now by people who previously held K1JON.
- N6OCScancelledSIERRA AMATEUR RADIO CLUBCAgranted 1999-06-02cancelled 2000-09-18
All historical holders
Every license row we've seen with the callsign K1JON, oldest first.
- SIERRA AMATEUR RADIO CLUB CA1999-11-03 → cancelled 2000-09-18
- CIOCCHI, JOHN S VT2023-04-11 active
- GRAY, GARY DAVID— → cancelled 1999-06-02