Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4LSI callsign genealogy
Currently held by PATTERSON, ELIZABETH M
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 K4LSI's current licensee, walking backwards.
- Harris, Sean DNCgranted 2024-03-01cancelled 2024-04-05
Successor callsigns
Callsigns held now by people who previously held K4LSI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4LSI, oldest first.
- PATTERSON, ELIZABETH M SC1988-11-08 → cancelled 2000-11-09
- Harris, Sean D NC2024-04-05 active