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

KR4SH callsign genealogy

Currently held by HAEFELI, ROLAND

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 KR4SH's current licensee, walking backwards.

  1. W4IPAactive· E
    BOLINE, JACOB MTXgranted 2020-04-18
  2. N5WONcancelled· G
    Boline, Jacob MTXgranted 2014-08-01cancelled 2020-04-18
  3. KF5WONcancelled· T
    Boline, Jacob MTXgranted 2013-07-23cancelled 2014-08-01

Successor callsigns

Callsigns held now by people who previously held KR4SH.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KR4SH, oldest first.

  • HAEFELI, ROLAND NC
    2004-03-05 → cancelled 2016-06-01
  • RUSSELL, RICHARD E FL
    2017-06-06 active
← Back to KR4SH License history →