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

NA1R callsign genealogy

Currently held by Windhorn, Thomas H

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 NA1R's current licensee, walking backwards.

  1. AB1CQcancelled· E
    CUMISKEY, GARY RMAgranted 2015-04-25cancelled 2019-10-01
  2. W1GRCcancelled· E
    CUMISKEY, GARY RMAgranted 2014-02-13cancelled 2015-04-25
  3. K1GJScancelled· E
    SPEARMAN, GERALD JTXgranted 2018-12-07cancelled 2019-06-01
  4. KG5WIZactive· E
    SPEARMAN Mr., GERALD JTXgranted 2019-06-01

Successor callsigns

Callsigns held now by people who previously held NA1R.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign NA1R, oldest first.

  • Windhorn, Thomas H MA
    2007-06-25 → cancelled 2019-09-12
  • CUMISKEY, GARY R MA
    2019-10-01 active
← Back to NA1R License history →