Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WS4AM callsign genealogy
Currently held by COSGROVE, SAMUEL
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 WS4AM's current licensee, walking backwards.
- COSGROVE, SAMUELFLgranted 1998-09-24cancelled 2008-07-11
Successor callsigns
Callsigns held now by people who previously held WS4AM.
No current licensee on record previously held this callsign.