Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JDI callsign genealogy
Currently held by SORKIN, ROBERT 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 W4JDI's current licensee, walking backwards.
- W9JDIno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W4JDI.
No current licensee on record previously held this callsign.