Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WJ0C callsign genealogy
Currently held by ROBBS, STEVEN D
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 WJ0C's current licensee, walking backwards.
- ROBBS, STEVEN DCOgranted 2015-05-09cancelled 2020-06-13
Successor callsigns
Callsigns held now by people who previously held WJ0C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WJ0C, oldest first.
- CALDWELL, LARRY J IA2008-02-15 → cancelled 2020-05-12
- ROBBS, STEVEN D CO2020-06-13 active