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

KG5JLG callsign genealogy

Currently held by Bolt, Mark 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 KG5JLG's current licensee, walking backwards.

  1. K5ACNcancelled· T
    Guadarrama, Jonathan LTXgranted 2018-07-31cancelled 2020-02-19
  2. KI5AUSactive· T
    Gleason, Brian DTXgranted 2021-01-15
  3. KI5MRMcancelled· T
    Gleason, Brian DTXgranted 2020-12-23cancelled 2021-01-15

Successor callsigns

Callsigns held now by people who previously held KG5JLG.

  1. N5BIKactive· T
    Bolt, Mark ATXgranted 2025-08-05

All historical holders

Every license row we've seen with the callsign KG5JLG, oldest first.

  • Bolt, Mark A TX
    2015-09-25 → cancelled 2015-10-16
  • Guadarrama, Jonathan L TX
    2020-02-19 active
← Back to KG5JLG License history →