Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4CSK callsign genealogy
Currently held by Clark, William W
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 WB4CSK's current licensee, walking backwards.
- Clark, William WTNgranted 2008-11-04cancelled 2008-11-25
Successor callsigns
Callsigns held now by people who previously held WB4CSK.
No current licensee on record previously held this callsign.