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

KB3UM callsign genealogy

Currently held by STORCHAN, GEOFFREY B

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 KB3UM's current licensee, walking backwards.

  1. KG3UMcancelled· E
    STORCHAN, GEOFFREY BDCgranted 2020-05-29cancelled 2021-11-23
  2. AB3UMcancelled· E
    STORCHAN, GEOFFREY BDCgranted 2011-04-05cancelled 2020-05-29
  3. KB8UUMcancelled· E
    STORCHAN, GEOFFREY BDCgranted 2004-10-19cancelled 2011-04-05

Successor callsigns

Callsigns held now by people who previously held KB3UM.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KB3UM, oldest first.

  • JONES, H KEARNEY MD
    1995-11-28 → cancelled 2007-11-29
  • STORCHAN, GEOFFREY B DC
    2021-11-23 active
← Back to KB3UM License history →