Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0SLS callsign genealogy
Currently held by SHAFER, SAM L
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 W0SLS's current licensee, walking backwards.
- SHAFER, SAM Lcancelled 1998-10-27
Successor callsigns
Callsigns held now by people who previously held W0SLS.
No current licensee on record previously held this callsign.