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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

W6TAM callsign genealogy

Currently held by SOUTHERN MARIN AMATEUR RAD TRANSMITTING SOC

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 W6TAM's current licensee, walking backwards.

  1. WA6TAMcancelled
    TAMALPAIS AMATEUR RADIO CLUBCAgranted 2014-09-23cancelled 2015-12-29
  2. KK6OSMcancelled
    TAMALPAIS AMATEUR RADIO CLUBCAgranted 2014-08-29cancelled 2014-09-23

Successor callsigns

Callsigns held now by people who previously held W6TAM.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W6TAM, oldest first.

  • SOUTHERN MARIN AMATEUR RAD TRANSMITTING SOC CA
    2003-12-09 → cancelled 2015-12-10
  • TAMALPAIS AMATEUR RADIO CLUB CA
    2025-11-21 active
← Back to W6TAM License history →