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

KV4ZX callsign genealogy

Currently held by Sjoberg, Carl R

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 KV4ZX's current licensee, walking backwards.

  1. KM4SJOcancelled· E
    Sjoberg, Carl RFLgranted 2014-06-27cancelled 2014-08-01
  2. KM4BNDcancelled· G
    Sjoberg, Carl RFLgranted 2014-05-19cancelled 2014-06-27

Successor callsigns

Callsigns held now by people who previously held KV4ZX.

No current licensee on record previously held this callsign.

← Back to KV4ZX License history →