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

AJ4VS callsign genealogy

Currently held by Singh, Vishnu K

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 AJ4VS's current licensee, walking backwards.

  1. K4VKScancelled· E
    Singh, Vishnu KFLgranted 2007-03-13cancelled 2009-12-22
  2. KI4TRTcancelled· T
    Singh, Vishnu KFLgranted 2007-02-21cancelled 2007-03-13

Successor callsigns

Callsigns held now by people who previously held AJ4VS.

  1. W4TFactive· E
    Singh, Vishnu KFLgranted 2026-09-02
← Back to AJ4VS License history →