Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK6OSM callsign genealogy
Currently held by TAMALPAIS AMATEUR RADIO 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 KK6OSM'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 KK6OSM.
- WA6TAMcancelledTAMALPAIS AMATEUR RADIO CLUBCAgranted 2014-09-23cancelled 2015-12-29