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

AB9OJ callsign genealogy

Currently held by Richards, Thomas E

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 AB9OJ's current licensee, walking backwards.

  1. KC8APZactive· E
    Richards, Thomas EOHgranted 2024-03-05
  2. KY9Iactive· E
    Brambach, Jason DKYgranted 2026-04-29
  3. KW4UIcancelled· E
    Brambach, Jason DKYgranted 2016-05-16cancelled 2016-06-04

Successor callsigns

Callsigns held now by people who previously held AB9OJ.

  1. KY9Icancelled· E
    Richards, Thomas EINgranted 2012-01-28cancelled 2014-05-16
← Back to AB9OJ License history →