Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3GX callsign genealogy
Currently held by Costigan Jr, Arthur J
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 AB3GX's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AB3GX.
- Costigan Jr, Arthur JPAgranted 2018-01-17