Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4WDR callsign genealogy
Currently held by Roberson, William D
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 K4WDR's current licensee, walking backwards.
- Roberson, William DGAgranted 2012-10-16cancelled 2015-10-09
Successor callsigns
Callsigns held now by people who previously held K4WDR.
No current licensee on record previously held this callsign.