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

W6CSR callsign genealogy

Currently held by De Leon, Cesar M

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 W6CSR's current licensee, walking backwards.

  1. W6ZFXcancelled· T
    De Leon, Cesar MCAgranted 2019-04-26cancelled 2021-07-24
  2. KM6ZFXcancelled· T
    De Leon, Cesar MCAgranted 2019-01-31cancelled 2019-04-26

Successor callsigns

Callsigns held now by people who previously held W6CSR.

  1. AC6TTactive· E
    De Leon, Cesar MCAgranted 2022-12-28

All historical holders

Every license row we've seen with the callsign W6CSR, oldest first.

  • Mason, Dan CA
    2000-09-19 → cancelled 2012-09-20
  • De Leon, Cesar M CA
    2021-07-24 → cancelled 2022-12-28
← Back to W6CSR License history →