Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DSL callsign genealogy
Currently held by Shimura, Norihide
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 W7DSL's current licensee, walking backwards.
- Shimura, NorihideORgranted 2010-03-12cancelled 2017-03-12
Successor callsigns
Callsigns held now by people who previously held W7DSL.
- EHMANN, MARTINNVgranted 2022-01-25
All historical holders
Every license row we've seen with the callsign W7DSL, oldest first.
- EHMANN, MARTIN NV2000-06-30 → cancelled 2002-03-08
- Shimura, Norihide OR2017-03-12 active