Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NT0BY callsign genealogy
Currently held by Sinclair, 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 NT0BY's current licensee, walking backwards.
- Sinclair, John AKYgranted 2020-09-30cancelled 2025-01-22
Successor callsigns
Callsigns held now by people who previously held NT0BY.
No current licensee on record previously held this callsign.