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

K4VO callsign genealogy

Currently held by HARGER, MARK

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 K4VO's current licensee, walking backwards.

  1. K4WCVcancelled· E
    MILBACK, ROBERT PNCgranted 2012-12-01cancelled 2019-10-11
  2. KA2WCVcancelled· T
    MILBACK, ROBERT PNCgranted 2005-02-17cancelled 2012-12-01

Successor callsigns

Callsigns held now by people who previously held K4VO.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4VO, oldest first.

  • HARGER, MARK AL
    2009-02-26 → cancelled 2017-09-21
  • MILBACK, ROBERT P NC
    2019-10-11 active
← Back to K4VO License history →