Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SDK callsign genealogy
Currently held by King, Sherry D
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 W4SDK's current licensee, walking backwards.
- KING, SHERRY DKYgranted 2008-07-31cancelled 2014-01-28
Successor callsigns
Callsigns held now by people who previously held W4SDK.
No current licensee on record previously held this callsign.