Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0SQ callsign genealogy
Currently held by Stone, Robert H
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 AB0SQ's current licensee, walking backwards.
- Stone, Robert HIAgranted 2001-08-22cancelled 2001-11-07
Successor callsigns
Callsigns held now by people who previously held AB0SQ.
- Stone, Robert HIAgranted 2002-03-07cancelled 2014-03-08