Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6TRI callsign genealogy
Currently held by OLSON, CHARLES S
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 N6TRI's current licensee, walking backwards.
- KK6TDCcancelledTRI-CITY AMATEUR RADIO CLUBCAgranted 2015-04-07cancelled 2015-04-28
Successor callsigns
Callsigns held now by people who previously held N6TRI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6TRI, oldest first.
- OLSON, CHARLES S CA1993-06-15 → cancelled 2005-06-16
- TRI-CITY AMATEUR RADIO CLUB CA2015-04-28 active