Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3EMS callsign genealogy
Currently held by SMITH SR, WILLIAM A
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 W3EMS's current licensee, walking backwards.
- Rollhauser, David AMDgranted 2018-03-13cancelled 2019-06-04
Successor callsigns
Callsigns held now by people who previously held W3EMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3EMS, oldest first.
- SMITH SR, WILLIAM A PA2007-03-22 → cancelled 2019-05-17
- Rollhauser, David A MD2019-06-04 active