Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB3UO callsign genealogy
Currently held by Barnett, Ralph 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 AB3UO's current licensee, walking backwards.
- Barnett, Ralph AMDgranted 2011-10-17cancelled 2014-05-20
Successor callsigns
Callsigns held now by people who previously held AB3UO.
No current licensee on record previously held this callsign.