Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA1BS callsign genealogy
Currently held by SYLVESTER JR, ROBERT D
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 AA1BS's current licensee, walking backwards.
- SYLVESTER JR, ROBERT DMEgranted 2016-09-16cancelled 2022-05-03
Successor callsigns
Callsigns held now by people who previously held AA1BS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA1BS, oldest first.
- BUTLER, CHARLES E CT2002-03-01 → cancelled 2014-04-29
- SYLVESTER JR, ROBERT D ME2022-05-03 active