Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI6SC callsign genealogy
Currently held by VASTA, WILLIAM M
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 AI6SC's current licensee, walking backwards.
- Behrman, Robert JGAgranted 2016-04-21cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held AI6SC.
- VASTA, WILLIAM MCAgranted 2017-01-18cancelled 2017-10-20
All historical holders
Every license row we've seen with the callsign AI6SC, oldest first.
- VASTA, WILLIAM M CA2016-07-13 → cancelled 2017-01-18
- Behrman, Robert J GA2019-02-20 active