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

K9NRJ 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 K9NRJ'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

Successor callsigns

Callsigns held now by people who previously held K9NRJ.

  1. KK9BCcancelled· E
    BUCHANAN, MARK AINgranted 2019-07-16cancelled 2021-12-03
  2. K9WTHcancelled· E
    BUCHANAN, MARK AINgranted 2018-12-27cancelled 2019-03-22

All historical holders

Every license row we've seen with the callsign K9NRJ, oldest first.

  • BUCHANAN, MARK A IN
    2017-07-04 → cancelled 2018-12-27
  • BUCHANAN, MARK A IN
    2019-03-22 → cancelled 2019-07-16
← Back to K9NRJ License history →