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

KK4PI callsign genealogy

Currently held by SIMMONDS, MARTIN G

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 KK4PI's current licensee, walking backwards.

  1. KG9QUcancelled· A
    SIMMONDS, MARTIN GINgranted 2013-09-13cancelled 2015-03-14

Successor callsigns

Callsigns held now by people who previously held KK4PI.

  1. KG9QUcancelled· A
    SIMMONDS, MARTIN GINgranted 2013-09-13cancelled 2015-03-14
  2. KG9QUcancelled· A
    SIMMONDS, MARTIN GINgranted 1998-03-03cancelled 2006-01-14

All historical holders

Every license row we've seen with the callsign KK4PI, oldest first.

  • SIMMONDS, MARTIN G IN
    1998-03-03 → cancelled 2002-02-08
  • SIMMONDS, MARTIN G IN
    2006-01-14 → cancelled 2013-09-13
  • SIMMONDS, MARTIN G IN
    2015-03-14 active
← Back to KK4PI License history →