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

K1RR callsign genealogy

Currently held by HORWATH, JAY 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 K1RR's current licensee, walking backwards.

  1. AF7JBcancelled· E
    Ahlborn, Glen AWAgranted 2011-06-20cancelled 2014-10-24
  2. KF7QLHcancelled· E
    Ahlborn, Glen AWAgranted 2011-06-20cancelled 2014-06-23

Successor callsigns

Callsigns held now by people who previously held K1RR.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K1RR, oldest first.

  • HORWATH, JAY A FL
    2002-10-03 → cancelled 2014-10-04
  • Ahlborn, Glen A WA
    2024-08-23 active
← Back to K1RR License history →