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

WL7M callsign genealogy

Currently held by PFEIFER, JOHN W

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 WL7M's current licensee, walking backwards.

  1. KL7ITcancelled· E
    Howard, George MAKgranted 2017-02-24cancelled 2023-10-24
  2. NW4Gactive· E
    Spears, Terrel JSCgranted 2019-03-16
  3. KN4PNHcancelled· E
    Spears, Terrel JSCgranted 2018-10-11cancelled 2019-03-16

Successor callsigns

Callsigns held now by people who previously held WL7M.

  1. WD0Mactive· E
    HANNIGAN, JOSEPH CCOgranted 2023-03-02
  2. KH6RFactive· E
    PFEIFER, JOHN WHIgranted 2021-06-04

All historical holders

Every license row we've seen with the callsign WL7M, oldest first.

  • HANNIGAN, JOSEPH C AK
    1996-11-04 → cancelled 2003-05-30
  • PFEIFER, JOHN W HI
    2015-05-12 → cancelled 2021-06-04
  • Howard, George M FL
    2023-10-24 active
← Back to WL7M License history →