Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4DLR callsign genealogy
Currently held by ROBERTSON, DAVID L
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 WB4DLR's current licensee, walking backwards.
- RAVICH, SAMANTHA FVAgranted 2025-05-23cancelled 2025-09-23
Successor callsigns
Callsigns held now by people who previously held WB4DLR.
- ROBERTSON, DAVID LNCgranted 2020-08-12
All historical holders
Every license row we've seen with the callsign WB4DLR, oldest first.
- ROBERTSON, DAVID L NC2008-04-18 → cancelled 2010-11-09
- RAVICH, SAMANTHA F VA2025-09-23 active