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Confidence: Medium · Source: FCC ULS · As of 2026-09-15

W4DTF callsign genealogy

Currently held by Yohpe, Theodore 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 W4DTF's current licensee, walking backwards.

  1. W4WCYcancelled· E
    Yohpe, Theodore RFLgranted 2014-02-28cancelled 2014-05-28
  2. KK4WUAcancelled· G
    Yohpe, Theodore RFLgranted 2014-01-31cancelled 2014-02-28

Successor callsigns

Callsigns held now by people who previously held W4DTF.

No current licensee on record previously held this callsign.

← Back to W4DTF License history →