Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0KWJ callsign genealogy
Currently held by OSTROWSKI, JAMIE 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 N0KWJ's current licensee, walking backwards.
- Johnson, Kevin WMNgranted 2020-10-22cancelled 2020-11-10
Successor callsigns
Callsigns held now by people who previously held N0KWJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0KWJ, oldest first.
- OSTROWSKI, JAMIE J MN1989-07-25 → cancelled 2001-07-26
- Johnson, Kevin W MN2020-11-10 active