Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB8SDZ callsign genealogy
Currently held by Bishop, Michael P
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 WB8SDZ's current licensee, walking backwards.
- Bishop, Michael POHgranted 2023-01-25cancelled 2023-12-05
Successor callsigns
Callsigns held now by people who previously held WB8SDZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB8SDZ, oldest first.
- MOBLEY, GEORGE W OH2007-04-26 → cancelled 2019-07-19
- Bishop, Michael P OH2023-12-05 active