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

K4HH callsign genealogy

Currently held by HOLT, CLARENCE H

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 K4HH's current licensee, walking backwards.

  1. NZ4Dactive· E
    Kelly, Michael ANCgranted 2021-10-13
  2. N4MAKcancelled· E
    Kelly, Michael ANCgranted 2010-04-27cancelled 2012-01-10
  3. KB4MKexpired· A
    KLINGER, MARTIN FFLgranted 2013-09-17cancelled 2025-09-18
  4. WB4SXDcancelled· A
    KLINGER, MARTIN FFLgranted 2006-05-30cancelled 2013-09-17

Successor callsigns

Callsigns held now by people who previously held K4HH.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4HH, oldest first.

  • HOLT, CLARENCE H FL
    2004-02-20 → cancelled 2004-07-31
  • ROYSE JR, HERBERT H KY
    2006-09-12 → cancelled 2009-05-16
  • JESSAMINE AMATEUR WIRELESS SOCIETY (JAWS) KY
    2019-10-07 active
← Back to K4HH License history →