Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4FCS callsign genealogy
Currently held by Frederick County Sheriff Specialized Communications Team
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 W4FCS's current licensee, walking backwards.
- KK4CJEcancelledFrederick County Sheriff Specialized Communications TeamVAgranted 2011-05-31cancelled 2011-07-12
Successor callsigns
Callsigns held now by people who previously held W4FCS.
No current licensee on record previously held this callsign.