Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO3G callsign genealogy
Currently held by Schwarzwald, Adam
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 WO3G's current licensee, walking backwards.
- Schwarzwald, AdamCAgranted 2020-01-07cancelled 2021-04-30
Successor callsigns
Callsigns held now by people who previously held WO3G.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO3G, oldest first.
- TRUSLOW, ROBERT L MD2011-03-28 → cancelled 2019-04-11
- Schwarzwald, Adam CA2021-04-30 active