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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

WB9MAB callsign genealogy

Currently held by BUCHANAN, MARK A

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 WB9MAB's current licensee, walking backwards.

  1. K9WTHcancelled· E
    BUCHANAN, MARK AINgranted 2021-12-03cancelled 2022-04-05
  2. KK9BCcancelled· E
    BUCHANAN, MARK AINgranted 2019-07-16cancelled 2021-12-03
  3. K9NRJcancelled· E
    BUCHANAN, MARK AINgranted 2019-03-22cancelled 2019-07-16

Successor callsigns

Callsigns held now by people who previously held WB9MAB.

  1. K9WTHcancelled· E
    BUCHANAN, MARK AINgranted 2014-09-13cancelled 2015-06-06
← Back to WB9MAB License history →