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

N5LRM callsign genealogy

Currently held by RIOS, LIBRADO

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 N5LRM's current licensee, walking backwards.

  1. KC5GAZcancelled· E
    RIOS, LIBRADOTXgranted 2014-03-11cancelled 2020-03-03

Successor callsigns

Callsigns held now by people who previously held N5LRM.

  1. W1KOAcancelled· T
    BILLINGTON, WILLIAM RTXgranted 2016-10-21cancelled 2017-10-28
  2. N4BRBcancelled· T
    BILLINGTON, WILLIAM RAZgranted 2007-02-13cancelled 2008-05-10

All historical holders

Every license row we've seen with the callsign N5LRM, oldest first.

  • BILLINGTON, WILLIAM R FL
    2000-12-16 → cancelled 2007-02-13
  • BILLINGTON, WILLIAM R TX
    2012-01-24 → cancelled 2016-10-21
  • RIOS, LIBRADO TX
    2020-03-03 active
← Back to N5LRM License history →