Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6SMB callsign genealogy
Currently held by Ballhorn, Sean 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 N6SMB's current licensee, walking backwards.
- Ballhorn, Sean MCAgranted 2015-05-21cancelled 2015-06-09
Successor callsigns
Callsigns held now by people who previously held N6SMB.
- Ballhorn, Sean MCAgranted 2025-06-10
All historical holders
Every license row we've seen with the callsign N6SMB, oldest first.
- NEISNER, CLYDE R CA1998-04-22 → cancelled 2010-04-23
- Ballhorn, Sean M CA2015-06-09 → cancelled 2015-07-03