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

KY4OI callsign genealogy

Currently held by BLOOD, ROGER M

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 KY4OI's current licensee, walking backwards.

  1. KF3ENcancelled· A
    BLOOD, ROGER MFLgranted 2012-11-05cancelled 2022-04-06
  2. KI5YNcancelled· A
    BLOOD, ROGER MPAgranted 2002-05-21cancelled 2005-11-15
  3. KK4SL
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KY4OI.

No current licensee on record previously held this callsign.

← Back to KY4OI License history →