Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4SEF callsign genealogy
Currently held by SADLER, REGINALD 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 WD4SEF's current licensee, walking backwards.
- N4VIIno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WD4SEF.
No current licensee on record previously held this callsign.