Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7CST callsign genealogy
Currently held by Mason County Communications Unit
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 W7CST's current licensee, walking backwards.
- KE7SFVcancelledMason County Communications Support TeamWAgranted 2008-03-11cancelled 2008-08-08
Successor callsigns
Callsigns held now by people who previously held W7CST.
- WA7MCUactiveMason County Communications UnitWAgranted 2019-08-31