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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K7ZT callsign genealogy

Currently held by WESTBROOK, JOSEPH B

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 K7ZT's current licensee, walking backwards.

  1. NY5Zactive· E
    Duncan, IanOKgranted 2026-04-24
  2. KC9THIcancelled· E
    Duncan, IanOKgranted 2020-10-27cancelled 2026-04-24

Successor callsigns

Callsigns held now by people who previously held K7ZT.

No current licensee on record previously held this callsign.