Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9KDK callsign genealogy
Currently held by KWASNIEWSKI, KENNETH 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 K9KDK's current licensee, walking backwards.
- Babcock, Alan WWIgranted 2006-05-11cancelled 2008-10-21
Successor callsigns
Callsigns held now by people who previously held K9KDK.
- KWASNIEWSKI, KENNETH DILgranted 2020-07-14
All historical holders
Every license row we've seen with the callsign K9KDK, oldest first.
- KWASNIEWSKI, KENNETH D IL1999-12-24 → cancelled 2000-10-11
- Babcock, Alan W WI2018-08-28 active