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

AA4OC callsign genealogy

Currently held by Tempel, William P

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 AA4OC's current licensee, walking backwards.

  1. W4WPTcancelled· E
    Tempel, William PGAgranted 2009-09-15cancelled 2010-04-27
  2. KJ4MGNcancelled· G
    TEMPEL, WILLIAM PGAgranted 2009-05-19cancelled 2009-09-15

Successor callsigns

Callsigns held now by people who previously held AA4OC.

  1. AA9RJcancelled· E
    HOWARD, BARRY DINgranted 2005-11-29cancelled 2014-03-14
← Back to AA4OC License history →