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

K9AIM callsign genealogy

Currently held by JOHNSTON, ROBERT W

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 K9AIM's current licensee, walking backwards.

  1. KD9JAFcancelled· G
    SHEFF, MICHAEL GWIgranted 2017-08-01cancelled 2018-05-18

Successor callsigns

Callsigns held now by people who previously held K9AIM.

  1. W9KEYcancelled· E
    JOHNSTON, ROBERT WINgranted 2014-10-04cancelled 2015-09-29

All historical holders

Every license row we've seen with the callsign K9AIM, oldest first.

  • RICHMOND, EDWARD H IN
    1997-05-19 → cancelled 2009-05-20
  • JOHNSTON, ROBERT W IN
    2010-01-30 → cancelled 2014-10-04
  • SHEFF, MICHAEL G WI
    2018-05-18 active
← Back to K9AIM License history →