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

K3RBS callsign genealogy

Currently held by SANBORN, ROBERT 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 K3RBS's current licensee, walking backwards.

  1. K3LEBcancelled· G
    SANBORN, ROBERT BPAgranted 2005-02-12cancelled 2006-09-06
  2. N3FUAcancelled· G
    SANBORN, ROBERT BNVgranted 1997-09-29cancelled 2005-02-12

Successor callsigns

Callsigns held now by people who previously held K3RBS.

  1. AB3GFactive· E
    SANBORN, ROBERT BPAgranted 2026-07-25
← Back to K3RBS License history →