Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0SWL callsign genealogy
Currently held by CORTESE, DAVID W
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 N0SWL's current licensee, walking backwards.
- CORTESE, DAVID WCOgranted 2008-11-13cancelled 2010-05-14
Successor callsigns
Callsigns held now by people who previously held N0SWL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0SWL, oldest first.
- PRALL, LOIS A SD2002-03-05 → cancelled 2003-09-13
- CORTESE, DAVID W CO2020-02-21 active