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

K6STR callsign genealogy

Currently held by Seiffert, Michael D

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 K6STR's current licensee, walking backwards.

  1. AE6NHcancelled· E
    Seiffert, Michael DCAgranted 2012-05-01cancelled 2021-09-21
  2. KG6MGJcancelled· E
    Seiffert, Michael DCAgranted 2002-07-16cancelled 2003-06-30

Successor callsigns

Callsigns held now by people who previously held K6STR.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K6STR, oldest first.

  • BENTSON, JOSEPH H CA
    1992-08-11 → cancelled 2004-08-12
  • Seiffert, Michael D CA
    2021-09-21 active
← Back to K6STR License history →