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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N4UYI callsign genealogy

Currently held by WILLIAMSON JR, NEEDHAM R

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 N4UYI's current licensee, walking backwards.

  1. KC4IFN
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N4UYI.

  1. N4NRWactive· E
    WILLIAMSON JR, NEEDHAM RSCgranted 2020-04-15
← Back to N4UYI License history →