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

K9JRR callsign genealogy

Currently held by Rosenberg, John R

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 K9JRR's current licensee, walking backwards.

  1. AB9FLcancelled· E
    Rosenberg, John RILgranted 2019-01-01cancelled 2020-05-22
  2. KB9UJHcancelled· E
    Rosenberg, John RILgranted 1999-03-25cancelled 2002-05-13

Successor callsigns

Callsigns held now by people who previously held K9JRR.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K9JRR, oldest first.

  • Robbins, Jon R IN
    2008-05-02 → cancelled 2020-05-05
  • Rosenberg, John R IL
    2020-05-22 active
← Back to K9JRR License history →