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

WS1R callsign genealogy

Currently held by Castner, Kevin C

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 WS1R's current licensee, walking backwards.

  1. WG3Kactive· E
    CHRISTENSEN, ERIC HMDgranted 2025-06-05
  2. W4OTNcancelled· E
    CHRISTENSEN, ERIC HMDgranted 2007-02-13cancelled 2015-07-14
  3. KF4OTNcancelled· G
    CHRISTENSEN, ERIC HNCgranted 2006-12-08cancelled 2007-02-13

Successor callsigns

Callsigns held now by people who previously held WS1R.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WS1R, oldest first.

  • MONCRIEF, GLENDON A NH
    2001-03-13 → cancelled 2013-05-29
  • Castner, Kevin C FL
    2023-11-15 active
← Back to WS1R License history →