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

AD4JH callsign genealogy

Currently held by SOUTHWICK SR, NELSON E

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 AD4JH's current licensee, walking backwards.

  1. KD4IXOcancelled· E
    HORTON, JASON MSCgranted 2016-10-18cancelled 2017-03-14
  2. KM4WUZcancelled· G
    HORTON, JASON MSCgranted 2016-09-22cancelled 2016-10-18

Successor callsigns

Callsigns held now by people who previously held AD4JH.

  1. KC4Qactive· E
    HORTON, JASON MSCgranted 2020-01-03

All historical holders

Every license row we've seen with the callsign AD4JH, oldest first.

  • SOUTHWICK SR, NELSON E FL
    1995-07-06 → cancelled 2005-12-15
  • HORTON, JASON M SC
    2017-03-14 → cancelled 2020-01-03
← Back to AD4JH License history →