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

AI4VN callsign genealogy

Currently held by Day, Jonathan W

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 AI4VN's current licensee, walking backwards.

  1. AC7VNcancelled· E
    Day, Jonathan WGAgranted 1999-11-04cancelled 2007-03-20
  2. AB9AKcancelled· E
    Day, Jonathan WORgranted 1999-11-04cancelled 2002-07-30
  3. KB9VJTcancelled· G
    Day, Jonathan WWIgranted 1999-11-04cancelled 2000-09-29

Successor callsigns

Callsigns held now by people who previously held AI4VN.

  1. AF6IDcancelled· E
    Day, Jonathan WORgranted 2009-09-22cancelled 2009-10-01
← Back to AI4VN License history →