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

AA5BC callsign genealogy

Currently held by Cosman, Bruce 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 AA5BC's current licensee, walking backwards.

  1. K9DBMcancelled· E
    MATTHEWS, DAVID BTXgranted 2023-11-04cancelled 2023-12-22
  2. N5MXNcancelled· T
    MATTHEWS, DAVID BTXgranted 2018-01-09cancelled 2023-11-04

Successor callsigns

Callsigns held now by people who previously held AA5BC.

  1. NU5Iactive· E
    MATTHEWS, DAVID BTXgranted 2024-02-03
  2. AE5Mcancelled· E
    FULLER, JAMES MARgranted 1996-11-04cancelled 2001-01-20

All historical holders

Every license row we've seen with the callsign AA5BC, oldest first.

  • Cosman, Bruce A OK
    2010-04-16 → cancelled 2022-04-19
  • MATTHEWS, DAVID B TX
    2023-12-22 → cancelled 2024-02-03
← Back to AA5BC License history →