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

WM1F callsign genealogy

Currently held by CASWELL JR, FRED I

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 WM1F's current licensee, walking backwards.

  1. AC1DLcancelled· E
    Haskell, Darius JMEgranted 2016-04-19cancelled 2018-02-03
  2. KC1FNLcancelled· E
    Haskell, Darius JMEgranted 2016-04-19cancelled 2017-10-17

Successor callsigns

Callsigns held now by people who previously held WM1F.

  1. K1UUactive· E
    CASWELL JR, FRED ICTgranted 2025-11-26

All historical holders

Every license row we've seen with the callsign WM1F, oldest first.

  • Wilson, Mark C SD
    2001-04-17 → cancelled 2012-11-28
  • CASWELL JR, FRED I CT
    2013-02-26 → cancelled 2016-01-09
  • Haskell, Darius J MA
    2018-02-03 active
← Back to WM1F License history →