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

KB9ECJ callsign genealogy

Currently held by SIEGEL, MATTHEW D

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 KB9ECJ's current licensee, walking backwards.

  1. N9JLSactive· E
    Swain, Judith LCAgranted 2020-07-24
  2. KK2JLScancelled· E
    Swain, Judith LCAgranted 2015-05-27cancelled 2020-07-24
  3. KK6TZDcancelled· T
    Swain, Judith LCAgranted 2015-05-05cancelled 2015-05-27

Successor callsigns

Callsigns held now by people who previously held KB9ECJ.

  1. K9EMFactive· E
    SIEGEL, MATTHEW DILgranted 2017-02-04
  2. N9JLScancelled· G
    SIEGEL, MATTHEW DILgranted 2010-03-02cancelled 2014-04-05
← Back to KB9ECJ License history →