uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KR4KOB callsign genealogy

Currently held by Double, David E

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 KR4KOB's current licensee, walking backwards.

  1. N1AREcancelled· G
    Double, David ESCgranted 2025-12-16cancelled 2026-03-17
  2. KB1YDMcancelled· G
    Double, David ENHgranted 2012-05-15cancelled 2016-02-12

Successor callsigns

Callsigns held now by people who previously held KR4KOB.

  1. N4GGBactive· G
    Double, DavidSCgranted 2026-04-04
← Back to KR4KOB License history →