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

KZ9H callsign genealogy

Currently held by COX, ALBERT 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 KZ9H's current licensee, walking backwards.

  1. KF9TCcancelled· E
    Castro, Joseph PINgranted 2003-10-10cancelled 2011-12-31
  2. N9QMJ
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KZ9H.

  1. WY9Jcancelled· E
    COX, ALBERT AINgranted 2009-05-29cancelled 2010-01-15

All historical holders

Every license row we've seen with the callsign KZ9H, oldest first.

  • COX, ALBERT A IN
    2003-04-16 → cancelled 2009-05-29
  • Castro, Joseph P IN
    2021-10-04 active
← Back to KZ9H License history →