Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK0KK callsign genealogy
Currently held by LEIVISKA, MICHAEL J
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 KK0KK's current licensee, walking backwards.
- MARTIN, DUANE LSDgranted 2009-12-18cancelled 2011-02-08
Successor callsigns
Callsigns held now by people who previously held KK0KK.
- Leiviska, Michael JMNgranted 2002-02-01cancelled 2011-11-07
All historical holders
Every license row we've seen with the callsign KK0KK, oldest first.
- LEIVISKA, MICHAEL J MN1999-05-12 → cancelled 2002-02-01
- MARTIN, DUANE L SD2020-12-17 active