Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0SP callsign genealogy
Currently held by Davis, John G
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 AB0SP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AB0SP.
No current licensee on record previously held this callsign.