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

KO4BH callsign genealogy

Currently held by NOLL, JOHN 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 KO4BH's current licensee, walking backwards.

  1. KY4BWHcancelled· E
    Hobdy, Bobby WKYgranted 2011-10-01cancelled 2014-04-01
  2. KC4ZOJcancelled· G
    Hobdy, Bobby WKYgranted 2011-02-04cancelled 2011-10-01

Successor callsigns

Callsigns held now by people who previously held KO4BH.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KO4BH, oldest first.

  • NOLL, JOHN W FL
    2001-02-08 → cancelled 2013-05-08
  • Hobdy, Bobby W KY
    2024-01-30 active
← Back to KO4BH License history →