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

W0UNX callsign genealogy

Currently held by Guthrie, Billy 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 W0UNX's current licensee, walking backwards.

  1. KC0UVScancelled· G
    Guthrie, Billy RCOgranted 2004-11-30cancelled 2005-09-20
  2. WH6CYMcancelled· G
    Guthrie, Billy RCOgranted 2004-11-30cancelled 2005-07-19
  3. KC5MFH
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W0UNX.

  1. W6UNXactive· G
    Guthrie, Billy RHIgranted 2018-01-23
← Back to W0UNX License history →