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

KB1XI callsign genealogy

Currently held by Mac Cord, Donald A

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 KB1XI's current licensee, walking backwards.

  1. AC1Uactive
    Advanced Conversion ARCVTgranted 2025-06-09
  2. NV1Nactive· E
    Beihold, FrederickWVgranted 2017-09-06
  3. AB1UFcancelled· E
    Beihold, FrederickMAgranted 2013-08-29cancelled 2017-09-06

Successor callsigns

Callsigns held now by people who previously held KB1XI.

  1. AC1Ucancelled· E
    Mac Cord, Donald ANHgranted 2005-06-01cancelled 2013-07-27

All historical holders

Every license row we've seen with the callsign KB1XI, oldest first.

  • Mac Cord, Donald A NH
    2003-09-04 → cancelled 2005-06-01
  • Mac Cord, Donald A NH
    2013-07-27 → cancelled 2020-04-14
← Back to KB1XI License history →