Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7SB callsign genealogy
Currently held by Chamberlain, Nicholas 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 AD7SB's current licensee, walking backwards.
- Chamberlain, Nicholas ACAgranted 2021-08-06
Successor callsigns
Callsigns held now by people who previously held AD7SB.
- Chamberlain, Nicholas ACAgranted 2021-08-06