Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4YBB callsign genealogy
Currently held by Mabery, Robert G
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 W4YBB's current licensee, walking backwards.
- Mabery, Robert GGAgranted 2010-05-28cancelled 2010-07-03
Successor callsigns
Callsigns held now by people who previously held W4YBB.
No current licensee on record previously held this callsign.