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

W1DRJ callsign genealogy

Currently held by HAMILTON, KEITH 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 W1DRJ's current licensee, walking backwards.

  1. AK4VXcancelled· E
    KAMBAYASHI, TAKASHITNgranted 2012-05-18cancelled 2020-08-01
  2. KF8VTcancelled· E
    KAMBAYASHI, TAKASHITNgranted 2012-05-18cancelled 2012-06-18
  3. N8QEZ
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W1DRJ.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W1DRJ, oldest first.

  • HAMILTON, KEITH E ME
    2008-04-09 → cancelled 2020-06-09
  • KAMBAYASHI, TAKASHI TN
    2020-08-01 active
← Back to W1DRJ License history →