Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO1NDR callsign genealogy
Currently held by Murphy, Benjamin S
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 WO1NDR's current licensee, walking backwards.
- Murphy, Benjamin SFLgranted 2021-03-29cancelled 2021-04-16
Successor callsigns
Callsigns held now by people who previously held WO1NDR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WO1NDR, oldest first.
- Sand, Christina C CA2008-03-08 → cancelled 2020-03-10
- Murphy, Benjamin S FL2021-04-16 active