Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA0RSD callsign genealogy
Currently held by FELSENTHAL, DOUGLAS 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 WA0RSD's current licensee, walking backwards.
- FELSENTHAL, DOUGLAS LMNgranted 2017-09-06cancelled 2017-11-07
Successor callsigns
Callsigns held now by people who previously held WA0RSD.
No current licensee on record previously held this callsign.