Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KN9DAV callsign genealogy
Currently held by Penkala, Leo 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 KN9DAV's current licensee, walking backwards.
- Penkala, Leo WILgranted 2009-03-18cancelled 2009-04-18
Successor callsigns
Callsigns held now by people who previously held KN9DAV.
- Penkala, Leo WILgranted 2011-05-10cancelled 2015-06-26