OurAirports has records for 4 different navaids with the identifier "SLI". Please select the one you'd like to view.
Brazil
280 KHz (SLI ... .-.. ..)
... .-.. ..
113.50 MHz (SLI ... .-.. ..)
Colombia
244 KHz (SLI ... .-.. ..)
United States
115.70 MHz (SLI ... .-.. ..)