My man, I feel the need to question your google skills. You didn't even post how you searched, but I dumped (lg 500g) into google, which gave this list - http://www.google.com/search?q=lg+50...ient=firefox-a
The first hit was a driver request for windows, and the second was this page:
I don't know if it is Spanish or Portugese, but the important info is in the very first paragraph
H-Frecuency: 30-61 Khz.
V-Frecuency: 50-120 Khz.