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

KC6J callsign genealogy

Currently held by Heinbokel, Christopher R

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 KC6J's current licensee, walking backwards.

  1. AI6JTcancelled· E
    Heinbokel, Christopher RCAgranted 2015-06-09cancelled 2016-04-19
  2. KK6UYJcancelled· E
    Heinbokel, Christopher RCAgranted 2015-06-09cancelled 2015-07-10
  3. KK6UQLcancelled· G
    Heinbokel, Christopher RCAgranted 2015-06-09cancelled 2015-06-23

Successor callsigns

Callsigns held now by people who previously held KC6J.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KC6J, oldest first.

  • SPEER, THOMAS G CA
    2004-02-17 → cancelled 2016-03-30
  • Heinbokel, Christopher R CA
    2026-02-20 active
← Back to KC6J License history →