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

AC9EI callsign genealogy

Currently held by PRIEN, RICHARD J

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 AC9EI's current licensee, walking backwards.

  1. KC9WCHcancelled· E
    PRIEN, RICHARD JILgranted 2011-03-25cancelled 2013-03-25
  2. KC9TXCcancelled· G
    PRIEN, RICHARD JILgranted 2011-03-25cancelled 2012-05-29

Successor callsigns

Callsigns held now by people who previously held AC9EI.

No current licensee on record previously held this callsign.

← Back to AC9EI License history →