Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NB6F callsign genealogy
Currently held by BENTLEY, ISAAC
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 NB6F's current licensee, walking backwards.
- BENTLEY, ISAACCAgranted 2013-03-22cancelled 2015-06-09
Successor callsigns
Callsigns held now by people who previously held NB6F.
- STEIN, JOSEPH ACAgranted 2023-05-17
All historical holders
Every license row we've seen with the callsign NB6F, oldest first.
- STEIN, JOSEPH A CA2004-12-21 → cancelled 2013-05-18
- BENTLEY, ISAAC CA2025-07-25 active