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

KB3RDO callsign genealogy

Currently held by SEELINGER, NICHOLAS S

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 KB3RDO's current licensee, walking backwards.

  1. N3KGDactive· E
    SEELINGER, NICHOLAS SPAgranted 2019-05-17
  2. WR3Factive· E
    DIFFENDERFER, RON BMSgranted 2021-06-22
  3. N5TPAcancelled· E
    DIFFENDERFER, RON BMSgranted 2021-03-05cancelled 2021-06-22

Successor callsigns

Callsigns held now by people who previously held KB3RDO.

  1. N3KGDcancelled· E
    SEELINGER, NICHOLAS SPAgranted 2016-07-08cancelled 2018-06-12
  2. N3KGDcancelled· T
    SEELINGER, NICHOLAS SPAgranted 2014-02-08cancelled 2016-01-29
  3. W8PSPcancelled· T
    Seelinger, Nicholas SPAgranted 2009-08-15cancelled 2009-11-26

All historical holders

Every license row we've seen with the callsign KB3RDO, oldest first.

  • Seelinger, Nicholas S PA
    2008-04-28 → cancelled 2009-08-15
  • Seelinger, Nicholas S PA
    2009-12-25 → cancelled 2014-02-08
  • SEELINGER, NICHOLAS S PA
    2016-01-29 → cancelled 2016-07-08
← Back to KB3RDO License history →