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

W9UFO callsign genealogy

Currently held by KOCH, MARVIN 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 W9UFO's current licensee, walking backwards.

  1. WA9UFOcancelled
    THE PURVEYORS OF DOOMINgranted 2008-03-11cancelled 2008-08-26
  2. KC9MWZcancelled
    THE PURVEYORS OF DOOMINgranted 2008-02-11cancelled 2008-03-11

Successor callsigns

Callsigns held now by people who previously held W9UFO.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W9UFO, oldest first.

  • KOCH, MARVIN J WI
    1998-03-03 → cancelled 1999-12-10
  • THE PURVEYORS OF DOOM IN
    2018-11-15 active
← Back to W9UFO License history →