Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0CL callsign genealogy
Currently held by LEWANDOWSKI, CALVIN 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 KC0CL's current licensee, walking backwards.
- LEWANDOWSKI, CALVIN WKSgranted 2008-05-05cancelled 2008-09-09
Successor callsigns
Callsigns held now by people who previously held KC0CL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0CL, oldest first.
- SWEZY, DAVID B MO1995-02-24 → cancelled 2001-07-26
- LEWANDOWSKI, CALVIN W AL2018-06-13 active