Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3JON callsign genealogy
Currently held by Johnson, Jon W
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 K3JON's current licensee, walking backwards.
- Johnson, Jon WPAgranted 2015-11-10cancelled 2015-12-08
Successor callsigns
Callsigns held now by people who previously held K3JON.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3JON, oldest first.
- SIERRA AMATEUR RADIO CLUB CA1998-01-06 → cancelled 2000-09-18
- Roberts, Jonathan C TX2003-11-18 → cancelled 2015-11-19
- Johnson, Jon W PA2025-12-12 active