Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI6WIZ callsign genealogy
Currently held by Strathman, Ronald L
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 KI6WIZ's current licensee, walking backwards.
- Wisniewski, Mark JCAgranted 2008-05-07cancelled 2017-04-14
Successor callsigns
Callsigns held now by people who previously held KI6WIZ.
- Strathman, Ronald LCAgranted 2009-04-14cancelled 2021-04-15
All historical holders
Every license row we've seen with the callsign KI6WIZ, oldest first.
- Strathman, Ronald L CA2009-03-03 → cancelled 2009-04-14
- Wisniewski, Mark J CA2017-04-14 active