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

KB1WPM callsign genealogy

Currently held by Speth, Donald R

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 KB1WPM's current licensee, walking backwards.

  1. KB1NULcancelled· G
    Speth, Donald RMAgranted 2008-06-18cancelled 2012-02-03
  2. KH7MVcancelled· G
    Speth, Donald RMAgranted 1998-07-28cancelled 2006-07-18
  3. KE4YFWcancelled· P
    SPETH, DONALD Rcancelled 1998-07-28

Successor callsigns

Callsigns held now by people who previously held KB1WPM.

  1. AB1QZcancelled· E
    Speth, Donald RWAgranted 2018-05-04cancelled 2019-03-06
← Back to KB1WPM License history →