Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W1COS callsign genealogy
Currently held by Coos NHARES Club
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 W1COS's current licensee, walking backwards.
- KB1JELcancelledCoos NHARES ClubNHgranted 2002-12-18cancelled 2003-01-22
Successor callsigns
Callsigns held now by people who previously held W1COS.
No current licensee on record previously held this callsign.