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

AC8KM callsign genealogy

Currently held by PORTER, MICHAEL R

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 AC8KM's current licensee, walking backwards.

  1. KD8ORRcancelled· E
    PORTER, MICHAEL RMIgranted 2009-08-25cancelled 2012-01-04
  2. KD8OQXcancelled· G
    PORTER, MICHAEL RMIgranted 2009-08-25cancelled 2010-08-13
  3. KD8LYDcancelled· G
    PORTER, MICHAEL RMIgranted 2009-08-25cancelled 2010-08-11

Successor callsigns

Callsigns held now by people who previously held AC8KM.

  1. KZ8Dexpired· E
    PORTER, MICHAEL RMIgranted 2012-01-28cancelled 2024-01-30