Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9SLD callsign genealogy
Currently held by Ess, Timothy 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 K9SLD's current licensee, walking backwards.
- Ess, TimothyCAgranted 2018-04-30cancelled 2018-06-19
Successor callsigns
Callsigns held now by people who previously held K9SLD.
No current licensee on record previously held this callsign.