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

K9WN callsign genealogy

Currently held by JACOBSEN, JOHN A

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 K9WN's current licensee, walking backwards.

  1. KG0JPactive· E
    Trautman Mr, Gary DMOgranted 2019-04-23
  2. KE0UWScancelled· E
    Trautman, Gary DMOgranted 2019-03-13cancelled 2019-04-23

Successor callsigns

Callsigns held now by people who previously held K9WN.

No current licensee on record previously held this callsign.

← Back to K9WN License history →