Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4DB callsign genealogy
Currently held by BLACKBURN, HOBSON 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 WB4DB's current licensee, walking backwards.
- Reyes, PedroFLgranted 2016-02-19cancelled 2017-12-08
Successor callsigns
Callsigns held now by people who previously held WB4DB.
- BLACKBURN, HOBSON DALgranted 2015-04-07cancelled 2019-11-08
All historical holders
Every license row we've seen with the callsign WB4DB, oldest first.
- BLACKBURN, HOBSON D AL2013-01-23 → cancelled 2015-04-07
- Reyes, Pedro FL2017-12-08 active