Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4MB callsign genealogy
Currently held by MASSON BOLANOS, RIGOBERTO
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 WA4MB's current licensee, walking backwards.
- MASSON BOLANOS, RIGOBERTOFLgranted 2010-09-03cancelled 2020-03-13
Successor callsigns
Callsigns held now by people who previously held WA4MB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4MB, oldest first.
- Belyea Jr, Gerard AL2007-07-19 → cancelled 2019-10-17
- MASSON BOLANOS, RIGOBERTO FL2020-03-13 active