Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3SWM callsign genealogy
Currently held by ROTH, DAVID P
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 W3SWM's current licensee, walking backwards.
- STEVENS, CHRISTOPHER WMDgranted 2017-12-20cancelled 2023-07-29
Successor callsigns
Callsigns held now by people who previously held W3SWM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3SWM, oldest first.
- ROTH, DAVID P KY2008-06-17 → cancelled 2020-07-16
- STEVENS, CHRISTOPHER W MD2023-07-29 active