Confidence: Medium · Source: FCC ULS · As of 2026-09-15
W5SMI callsign genealogy
Currently held by SWANN JR, CLIFFORD
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 W5SMI's current licensee, walking backwards.
- Stocks, Bill CARgranted 2014-05-28cancelled 2014-07-12
Successor callsigns
Callsigns held now by people who previously held W5SMI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5SMI, oldest first.
- SWANN JR, CLIFFORD TX1996-01-22 → cancelled 2008-01-23
- Stocks, Bill C AR2014-07-12 → cancelled 2026-07-14