Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WO0C callsign genealogy
Currently held by SHERMAN, SHELDON 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 WO0C's current licensee, walking backwards.
- Lanari, Benjamin PMNgranted 2020-02-10cancelled 2020-07-14
Successor callsigns
Callsigns held now by people who previously held WO0C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO0C, oldest first.
- SHERMAN, SHELDON M MO2008-07-02 → cancelled 2018-06-14
- Lanari, Benjamin P MN2020-07-14 active