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

AJ6DX callsign genealogy

Currently held by Castillo Sierra, Antonio Jose

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 AJ6DX's current licensee, walking backwards.

  1. NO6Hactive· E
    Garrett, Patrick BCAgranted 2026-08-11
  2. K6LDXcancelled· E
    Garrett, Patrick BCAgranted 2017-04-14cancelled 2026-08-11
  3. KM6JNPcancelled· T
    Garrett, Patrick BCAgranted 2017-03-24cancelled 2017-04-14

Successor callsigns

Callsigns held now by people who previously held AJ6DX.

  1. NO8Pactive· E
    Castillo Sierra, Antonio JoseCAgranted 2021-10-16
  2. NO6YMcancelled
    AMADOR SIX METER DX CLUBCAgranted 2017-02-17cancelled 2017-11-17

All historical holders

Every license row we've seen with the callsign AJ6DX, oldest first.

  • AMADOR SIX METER DX CLUB CA
    2016-07-01 → cancelled 2017-02-17
  • Castillo Sierra, Antonio Jose CA
    2021-07-03 → cancelled 2021-10-16
  • FORMA, GIOVANNI E CA
    2024-07-09 active
← Back to AJ6DX License history →