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

N4EOI callsign genealogy

Currently held by GUTHRIE III, JOHN T

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 N4EOI's current licensee, walking backwards.

  1. KI4IAPcancelled· G
    GUTHRIE III, JOHN TALgranted 1997-06-03cancelled 2005-01-07
  2. KF4SEVcancelled· G
    GUTHRIE III, JOHN TALgranted 1997-06-03cancelled 2004-12-14
  3. KF4OBZ
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N4EOI.

No current licensee on record previously held this callsign.

← Back to N4EOI License history →