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

W4RTB callsign genealogy

Currently held by Back, Ryan T

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 W4RTB's current licensee, walking backwards.

  1. KV4SNcancelled· E
    Back, Ryan TGAgranted 2009-03-23cancelled 2013-12-17
  2. KV4PZcancelled· E
    Back, Ryan TGAgranted 2009-03-23cancelled 2013-11-13
  3. KK4SRLcancelled· E
    Back, Ryan TGAgranted 2009-03-23cancelled 2013-08-02
  4. KD8KNLcancelled· G
    Back, Ryan TGAgranted 2009-03-23cancelled 2013-07-19

Successor callsigns

Callsigns held now by people who previously held W4RTB.

No current licensee on record previously held this callsign.

← Back to W4RTB License history →