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

K4ZS callsign genealogy

Currently held by Wollaeger, David P

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 K4ZS's current licensee, walking backwards.

  1. AB4DWcancelled· E
    Wollaeger, David PNCgranted 2016-05-20cancelled 2016-07-29
  2. KW4TUcancelled· E
    Wollaeger, David PNCgranted 2016-04-19cancelled 2016-05-20

Successor callsigns

Callsigns held now by people who previously held K4ZS.

  1. KQ4BRexpired· E
    Willis, Thomas JNCgranted 2014-07-08cancelled 2026-07-09
  2. AJ4RWcancelled· E
    WOODS, RANDY RFLgranted 2012-03-23cancelled 2013-04-12

All historical holders

Every license row we've seen with the callsign K4ZS, oldest first.

  • MOORE III III, WILLIAM J SC
    2000-01-29 → cancelled 2012-01-31
  • WOODS, RANDY R FL
    2012-02-17 → cancelled 2012-03-23
  • Willis, Thomas J NC
    2014-04-11 → cancelled 2014-07-08
  • Wollaeger, David P NC
    2026-06-04 active
← Back to K4ZS License history →