Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4UAS callsign genealogy
Currently held by SHRIDER, ROBERT E
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 W4UAS's current licensee, walking backwards.
- SHRIDER, ROBERT EFLgranted 1998-12-02cancelled 2003-12-30
Successor callsigns
Callsigns held now by people who previously held W4UAS.
No current licensee on record previously held this callsign.