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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KJ4YDO callsign genealogy

Currently held by Forslin, Eric 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 KJ4YDO's current licensee, walking backwards.

  1. KJ4IQJcancelled· T
    Forslin, Eric JNCgranted 2010-01-22cancelled 2010-08-28
  2. KG4HDUcancelled· T
    Forslin, Eric JNCgranted 2000-04-13cancelled 2008-12-23

Successor callsigns

Callsigns held now by people who previously held KJ4YDO.

  1. W9KGTactive· T
    Forslin, Eric JNCgranted 2016-12-06
← Back to KJ4YDO License history →