uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K4RTN callsign genealogy

Currently held by DIPOLITO, 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 K4RTN's current licensee, walking backwards.

  1. AK4HCcancelled· E
    DIPOLITO, JOHN MGAgranted 2012-12-11cancelled 2019-05-10
  2. KG4WMYcancelled· E
    Dipolito, John MGAgranted 2002-12-17cancelled 2011-03-26

Successor callsigns

Callsigns held now by people who previously held K4RTN.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4RTN, oldest first.

  • DIPOLITO, JACK M FL
    2007-01-31 → cancelled 2019-04-09
  • DIPOLITO, JOHN M GA
    2019-05-10 active
← Back to K4RTN License history →