Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD0S callsign genealogy
Currently held by Ross, Steven C
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 WD0S's current licensee, walking backwards.
- Ross, Steven CCOgranted 2019-12-30cancelled 2020-01-18
Successor callsigns
Callsigns held now by people who previously held WD0S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD0S, oldest first.
- MULLIKIN, JEROME L CO2007-11-21 → cancelled 2019-12-19
- Ross, Steven C CO2020-01-18 active