Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NB7JB callsign genealogy
Currently held by Bertha, John 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 NB7JB's current licensee, walking backwards.
- Bertha, John AORgranted 2005-12-20cancelled 2007-03-20
Successor callsigns
Callsigns held now by people who previously held NB7JB.
No current licensee on record previously held this callsign.