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

N4SQL callsign genealogy

Currently held by HASLEY, GERALDINE 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 N4SQL's current licensee, walking backwards.

  1. KJ4UQKcancelled· G
    GREENARCH, LARRY KNCgranted 2008-07-19cancelled 2010-06-04
  2. W4CILactive· G
    GREENARCH, LARRY KTNgranted 2023-06-22
  3. KC4YPHcancelled· G
    GREENARCH, LARRY KTNgranted 2021-10-09cancelled 2023-06-22
  4. N4LKGcancelled· G
    GREENARCH, LARRY KTNgranted 2021-06-22cancelled 2021-10-09
  5. KZ4KZQcancelled· G
    GREENARCH, LARRY KNCgranted 2020-11-28cancelled 2021-06-22

Successor callsigns

Callsigns held now by people who previously held N4SQL.

  1. W4CILcancelled· G
    GREENARCH, LARRY KNCgranted 2016-01-19cancelled 2018-12-14

All historical holders

Every license row we've seen with the callsign N4SQL, oldest first.

  • HASLEY, GERALDINE M FL
    1998-01-09 → cancelled 2010-01-12
  • GREENARCH, LARRY K NC
    2010-06-04 → cancelled 2016-01-19
← Back to N4SQL License history →