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

NU4F callsign genealogy

Currently held by SAPIO III, MICHAEL J

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 NU4F's current licensee, walking backwards.

  1. K4VMFcancelled· E
    FORAN, MattFLgranted 2024-01-05cancelled 2024-09-06
  2. KQ4NBVcancelled· T
    FORAN, MATTHEWFLgranted 2023-12-12cancelled 2024-01-05

Successor callsigns

Callsigns held now by people who previously held NU4F.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign NU4F, oldest first.

  • SAPIO III, MICHAEL J SC
    2000-07-28 → cancelled 2012-07-31
  • Morrison, Christopher KY
    2012-08-17 → cancelled 2024-08-20
  • Foran, Matthew FL
    2024-09-06 active
← Back to NU4F License history →