Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6TDS callsign genealogy
Currently held by Schopen, Timothy D
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 W6TDS's current licensee, walking backwards.
- Schopen, Timothy DCAgranted 2016-12-21cancelled 2017-03-12
Successor callsigns
Callsigns held now by people who previously held W6TDS.
- JOHNSON, DAVID CCAgranted 2009-02-14cancelled 2021-01-29
All historical holders
Every license row we've seen with the callsign W6TDS, oldest first.
- Schopen, Timothy D TN2017-03-12 active
- JOHNSON, DAVID C— → cancelled 1999-01-28