Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4KLS callsign genealogy
Currently held by Sittnick, Patrick S
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 K4KLS's current licensee, walking backwards.
- Sittnick, Patrick STNgranted 2015-11-24cancelled 2015-12-15
Successor callsigns
Callsigns held now by people who previously held K4KLS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KLS, oldest first.
- SOWERS, KERRI L VA1998-12-17 → cancelled 2010-12-21
- Sittnick, Patrick S TN2025-09-17 active