Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DWP callsign genealogy
Currently held by PENDERGRASS, DONALD W
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 W4DWP's current licensee, walking backwards.
- PENDERGRASS, DONALD Wcancelled 1999-04-08
Successor callsigns
Callsigns held now by people who previously held W4DWP.
No current licensee on record previously held this callsign.