Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0CDW callsign genealogy
Currently held by Winkowski, Calvin 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 N0CDW's current licensee, walking backwards.
- Winkowski, Calvin DVAgranted 2012-03-16cancelled 2017-04-29
Successor callsigns
Callsigns held now by people who previously held N0CDW.
No current licensee on record previously held this callsign.