Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9BM callsign genealogy
Currently held by VIETH, ARTHUR W
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 N9BM's current licensee, walking backwards.
- Canfield, Randy GCAgranted 2015-04-17cancelled 2020-02-14
Successor callsigns
Callsigns held now by people who previously held N9BM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9BM, oldest first.
- VIETH, ARTHUR W WI2007-09-11 → cancelled 2019-11-30
- Canfield, Randy G CA2020-02-14 active