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

N4TAS callsign genealogy

Currently held by SIEFFERMAN, DONALD G

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 N4TAS's current licensee, walking backwards.

  1. WA4TAScancelled· G
    Savage, Thomas ADEgranted 2015-07-03cancelled 2019-08-16
  2. KI4MFXcancelled· G
    Savage, Thomas AVAgranted 2005-10-20cancelled 2015-07-03

Successor callsigns

Callsigns held now by people who previously held N4TAS.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign N4TAS, oldest first.

  • SIEFFERMAN, DONALD G AL
    1998-04-15 → cancelled 2004-11-21
  • SHELTON, TERRY A NC
    2016-10-19 active
← Back to N4TAS License history →