Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4OII callsign genealogy
Currently held by Sumner County Amateur Radio Emergency Service
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 KN4OII's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KN4OII.
- N4SCAactiveSumner County Amateur Radio Emergency ServiceTNgranted 2018-08-31