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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N9XRM callsign genealogy

Currently held by BUCHHOLZ, MICHAEL A

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 N9XRM's current licensee, walking backwards.

  1. KC9RPMcancelled· G
    Mangold, Robert PINgranted 2016-10-12cancelled 2017-07-25
  2. KC9JSTcancelled· T
    Mangold, Robert PINgranted 2006-06-29cancelled 2006-12-12

Successor callsigns

Callsigns held now by people who previously held N9XRM.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign N9XRM, oldest first.

  • BUCHHOLZ, MICHAEL A WI
    1994-07-14 → cancelled 2006-07-15
  • Mangold, Robert P IN
    2017-07-25 active
← Back to N9XRM License history →