Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SMS callsign genealogy
Currently held by SONDAG, STEPHEN M
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 W4SMS's current licensee, walking backwards.
- WA4TDHcancelledcancelled 1997-10-15
Successor callsigns
Callsigns held now by people who previously held W4SMS.
No current licensee on record previously held this callsign.