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

WH6EIN callsign genealogy

Currently held by Cook, Mark D M

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 WH6EIN's current licensee, walking backwards.

  1. AH6ULcancelled· E
    Cook, Mark D MHIgranted 2013-12-06cancelled 2018-08-21

Successor callsigns

Callsigns held now by people who previously held WH6EIN.

  1. AH6ULcancelled· E
    Cook, Mark D MHIgranted 2013-12-06cancelled 2018-08-21

All historical holders

Every license row we've seen with the callsign WH6EIN, oldest first.

  • Cook, Mark D M HI
    2013-12-06 → cancelled 2014-02-28
  • Cook, Mark DM NM
    2018-08-21 active
← Back to WH6EIN License history →