Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8NWN callsign genealogy
Currently held by Koster, 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 K8NWN's current licensee, walking backwards.
- Koster, Michael JMIgranted 2020-02-10cancelled 2020-03-31
Successor callsigns
Callsigns held now by people who previously held K8NWN.
No current licensee on record previously held this callsign.