Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8SDK callsign genealogy
Currently held by KIRKER, STEWART 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 W8SDK's current licensee, walking backwards.
- Kirker, Stewart DMIgranted 2013-05-10cancelled 2015-12-11
Successor callsigns
Callsigns held now by people who previously held W8SDK.
No current licensee on record previously held this callsign.