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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KP4OS callsign genealogy

Currently held by QUINONES, JESUS M

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 KP4OS's current licensee, walking backwards.

  1. KP4JQScancelled· E
    QUINONES, JESUS MPRgranted 2007-09-28cancelled 2011-12-16

Successor callsigns

Callsigns held now by people who previously held KP4OS.

  1. KP4JQScancelled· E
    QUINONES, JESUS MPRgranted 2007-09-28cancelled 2011-12-16

All historical holders

Every license row we've seen with the callsign KP4OS, oldest first.

  • QUINONES, JESUS M PR
    1997-12-15 → cancelled 2007-09-28
  • QUINONES, JESUS M PR
    2021-12-06 active
← Back to KP4OS License history →