Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW0JON callsign genealogy
Currently held by Sessions, Jonathan M
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 WW0JON's current licensee, walking backwards.
- Sessions, Jonathan MMOgranted 2024-05-09cancelled 2024-05-29
Successor callsigns
Callsigns held now by people who previously held WW0JON.
- WALDON, JON MNYgranted 2023-04-25
All historical holders
Every license row we've seen with the callsign WW0JON, oldest first.
- WALDON, JON M CA1999-11-20 → cancelled 2003-01-14
- Sessions, Jonathan M MO2024-05-29 active