Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4DRS callsign genealogy
Currently held by RISH, WILLIAM R
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 W4DRS's current licensee, walking backwards.
- Sanders, Donald RFLgranted 2010-11-09cancelled 2011-02-01
Successor callsigns
Callsigns held now by people who previously held W4DRS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4DRS, oldest first.
- RISH, WILLIAM R FL1996-08-01 → cancelled 2008-08-02
- Sanders, Donald R FL2020-12-16 active