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

KX5R callsign genealogy

Currently held by BLACK, SANFORD L

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 KX5R's current licensee, walking backwards.

  1. W5MKOcancelled· E
    OZBORN, MICHAEL KMSgranted 2008-03-11cancelled 2010-10-19
  2. KF5PScancelled· A
    OZBORN, MICHAEL KMSgranted 2006-01-24cancelled 2008-03-11

Successor callsigns

Callsigns held now by people who previously held KX5R.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KX5R, oldest first.

  • BLACK, SANFORD L TX
    2006-08-08 → cancelled 2007-07-09
  • OZBORN, MICHAEL K MS
    2020-07-31 active
← Back to KX5R License history →