Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0SDL callsign genealogy
Currently held by LAMB, STACY 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 W0SDL's current licensee, walking backwards.
- LAMB, STACY DMOgranted 2023-11-15cancelled 2023-12-05
Successor callsigns
Callsigns held now by people who previously held W0SDL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0SDL, oldest first.
- GRAFFT, CHARLES L MN1998-12-15 → cancelled 2010-12-16
- LAMB, STACY D MO2023-12-05 active