Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8CST callsign genealogy
Currently held by KOCHER, CHARLES F
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 W8CST's current licensee, walking backwards.
- Tanner, Cheryl SMIgranted 2016-05-03cancelled 2016-05-24
Successor callsigns
Callsigns held now by people who previously held W8CST.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8CST, oldest first.
- KOCHER, CHARLES F MI1994-09-09 → cancelled 2006-09-12
- Tanner, Cheryl S MI2016-05-24 active