Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4SMS callsign genealogy
Currently held by STEIN, LAWRENCE W
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 WB4SMS's current licensee, walking backwards.
- Suzanne Jr, Steven MNCgranted 2020-01-27cancelled 2021-03-23
Successor callsigns
Callsigns held now by people who previously held WB4SMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB4SMS, oldest first.
- STEIN, LAWRENCE W KY2006-04-05 → cancelled 2018-06-29
- Suzanne Jr, Steven M NC2021-03-23 active