Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9AB callsign genealogy
Currently held by Craig, Ralph O
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 AB9AB's current licensee, walking backwards.
- Layne, Charles JINgranted 2011-11-01cancelled 2020-10-16
Successor callsigns
Callsigns held now by people who previously held AB9AB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB9AB, oldest first.
- Craig, Ralph O IN2007-08-02 → cancelled 2019-10-31
- Layne, Charles J IN2020-10-16 active