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

NQ4F callsign genealogy

Currently held by GREENFIELD, JEFFREY B

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 NQ4F's current licensee, walking backwards.

  1. AJ4VVcancelled· E
    DALE JR, WALTER TTNgranted 2010-12-30cancelled 2020-01-31
  2. KJ4RPCcancelled· E
    DALE JR, WALTER TTNgranted 2001-04-03cancelled 2010-02-19
  3. KC4YCRcancelled· G
    DALE JR, WALTER TTNgranted 2001-04-03cancelled 2010-01-13

Successor callsigns

Callsigns held now by people who previously held NQ4F.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign NQ4F, oldest first.

  • GREENFIELD, JEFFREY B ME
    2008-01-22 → cancelled 2020-01-14
  • DALE JR, WALTER T TN
    2020-01-31 active
← Back to NQ4F License history →