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

W7BUS callsign genealogy

Currently held by LANDIS, MARK G

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 W7BUS's current licensee, walking backwards.

  1. W7TENactive
    PINEAPPLE STATE PAPER CHASERSHIgranted 2016-04-08
  2. WV0Zactive· E
    Baumann, Robert GCOgranted 2018-04-27
  3. KE0QHHcancelled· E
    Baumann, Robert GCOgranted 2018-02-27cancelled 2018-04-27

Successor callsigns

Callsigns held now by people who previously held W7BUS.

  1. W7TENcancelled· G
    LANDIS, MARK GORgranted 2013-11-26cancelled 2014-03-18
  2. W7TENcancelled· G
    LANDIS, MARK GORgranted 2013-03-22cancelled 2013-04-27
  3. K7IWJcancelled· G
    LANDIS, MARK GORgranted 2011-03-04cancelled 2012-12-01

All historical holders

Every license row we've seen with the callsign W7BUS, oldest first.

  • CARROLL, JOHN M WA
    1988-03-22 → cancelled 2000-03-23
  • LANDIS, MARK G OR
    2003-11-07 → cancelled 2011-03-04
  • LANDIS, MARK G OR
    2012-12-01 → cancelled 2013-03-22
  • LANDIS, MARK G OR
    2013-04-27 → cancelled 2013-11-26
  • LANDIS, MARK G OR
    2025-02-22 active
← Back to W7BUS License history →