Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0JPN callsign genealogy
Currently held by Cole, Charlie 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 W0JPN's current licensee, walking backwards.
- Cole, Charlie KCOgranted 2020-10-13cancelled 2020-11-03
Successor callsigns
Callsigns held now by people who previously held W0JPN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0JPN, oldest first.
- WOZNICK, ROBERT E NE1998-01-05 → cancelled 2010-01-06
- Cole, Charlie K CO2020-11-03 active