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

KK7ZO callsign genealogy

Currently held by ROWEKAMP, WILLIAM J

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 KK7ZO's current licensee, walking backwards.

  1. KM5YUcancelled· A
    ROWEKAMP, WILLIAM JAZgranted 2009-12-15cancelled 2018-10-05
  2. KI0RJcancelled· A
    ROWEKAMP, WILLIAM JTXgranted 2000-01-04cancelled 2007-01-30
  3. KB0UWcancelled· A
    ROWEKAMP, WILLIAM JMOgranted 1989-08-01cancelled 2000-01-04

Successor callsigns

Callsigns held now by people who previously held KK7ZO.

  1. KA0EROactive· A
    ROWEKAMP, WILLIAM JMOgranted 2022-01-07
← Back to KK7ZO License history →