Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DLS callsign genealogy
Currently held by SANFORD, DAVID L
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 W1DLS's current licensee, walking backwards.
- Stonehill, David LMEgranted 2006-07-20cancelled 2006-08-08
Successor callsigns
Callsigns held now by people who previously held W1DLS.
- SANFORD, DAVID LMAgranted 2003-12-02cancelled 2004-05-14
All historical holders
Every license row we've seen with the callsign W1DLS, oldest first.
- SANFORD, DAVID L MA1996-12-11 → cancelled 2003-12-02
- Stonehill, David L NH2016-05-27 active