Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB0AAR callsign genealogy
Currently held by Marx, Joshua
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 KB0AAR's current licensee, walking backwards.
- Marx, JoshuaMNgranted 2025-02-15cancelled 2025-03-14
Successor callsigns
Callsigns held now by people who previously held KB0AAR.
- Marx, Gregory GMNgranted 1997-12-22cancelled 2006-12-12
All historical holders
Every license row we've seen with the callsign KB0AAR, oldest first.
- Marx, Gregory G MN1997-12-22 → cancelled 2002-06-18
- Marx, Joshua MN2025-03-14 active