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

K1MJP callsign genealogy

Currently held by RUSSELL, PETER O

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 K1MJP's current licensee, walking backwards.

  1. KF5ZELcancelled· G
    PEARSON, MATTHEW JTXgranted 2013-11-19cancelled 2013-12-10

Successor callsigns

Callsigns held now by people who previously held K1MJP.

  1. K4PORactive· G
    RUSSELL, PETER OFLgranted 2021-06-04
  2. K4PORcancelled· G
    RUSSELL, PETER OFLgranted 2008-01-18cancelled 2009-01-16

All historical holders

Every license row we've seen with the callsign K1MJP, oldest first.

  • RUSSELL, PETER O FL
    2005-09-07 → cancelled 2008-01-18
  • RUSSELL, PETER O FL
    2009-01-16 → cancelled 2011-07-06
  • PEARSON, MATTHEW J TX
    2024-01-25 active
← Back to K1MJP License history →