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

W4RTW callsign genealogy

Currently held by PHIFER, JOHN M

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 W4RTW's current licensee, walking backwards.

  1. KV4HZcancelled· A
    KETYER, STEPHEN MVAgranted 2007-07-24cancelled 2013-07-23
  2. W2SMKactive
    Saint Maximillian Kolbe Memorial ClubNJgranted 2019-06-21
  3. KD2SDOcancelled
    Saint Maximillian Kolbe Memorial ClubNJgranted 2019-05-24cancelled 2019-06-21

Successor callsigns

Callsigns held now by people who previously held W4RTW.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4RTW, oldest first.

  • PHIFER, JOHN M NC
    1999-03-29 → cancelled 2009-09-18
  • KETYER, STEPHEN M VA
    2023-07-08 active
← Back to W4RTW License history →