Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD8Z callsign genealogy
Currently held by SEIDLE, CRAIG C
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 WD8Z's current licensee, walking backwards.
- DIETZ, DOUGLAS LMIgranted 2006-01-28cancelled 2010-05-25
Successor callsigns
Callsigns held now by people who previously held WD8Z.
- SEIDLE, CRAIG CPAgranted 2017-11-29
All historical holders
Every license row we've seen with the callsign WD8Z, oldest first.
- SEIDLE, CRAIG C PA2008-01-08 → cancelled 2008-02-22
- DIETZ, DOUGLAS L MI2020-05-15 active