Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7ESC callsign genealogy
Currently held by Guo, Arthur
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 N7ESC's current licensee, walking backwards.
- Guo, Arthur MCAgranted 2020-02-20cancelled 2020-03-10
Successor callsigns
Callsigns held now by people who previously held N7ESC.