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

KI4H callsign genealogy

Currently held by MAY, DONALD 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 KI4H's current licensee, walking backwards.

  1. KF4DAcancelled· E
    MC DONALD, STANLEY WGAgranted 2000-02-25cancelled 2000-05-26
  2. WA4IZIcancelled· A
    MC DONALD, STANLEY WGAgranted 1993-01-12cancelled 2000-02-25

Successor callsigns

Callsigns held now by people who previously held KI4H.

  1. K4DMactive· E
    MAY, DONALD HALgranted 2017-12-29

All historical holders

Every license row we've seen with the callsign KI4H, oldest first.

  • MC DONALD, STANLEY W GA
    2019-12-26 active
  • MAY, DONALD H
    — → cancelled 1998-03-19
← Back to KI4H License history →