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

WT3K callsign genealogy

Currently held by Witt, John D

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 WT3K's current licensee, walking backwards.

  1. AC3BUcancelled· E
    Olson, Daryl LMDgranted 2017-06-12cancelled 2020-06-05
  2. KC3JJFcancelled· E
    Olson, Daryl LMDgranted 2017-06-12cancelled 2017-10-23

Successor callsigns

Callsigns held now by people who previously held WT3K.

  1. W5ATactive· E
    Nill, Mark DTXgranted 2018-11-19

All historical holders

Every license row we've seen with the callsign WT3K, oldest first.

  • Witt, John D WA
    2008-05-16 → cancelled 2020-05-19
  • Olson, Daryl L MD
    2020-06-05 active
  • NILL, MARK D
    — → cancelled 1998-10-05
← Back to WT3K License history →