Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4DFF callsign genealogy
Currently held by ASTOLFI, GLENN 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 WB4DFF's current licensee, walking backwards.
- ASTOLFI, GLENN RTXgranted 1990-06-05cancelled 2001-02-23
- N5HSYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WB4DFF.
No current licensee on record previously held this callsign.