Most of the time, I hear the park bases and mobiles on 151.340 with no DCS or PL tone. I live about five miles from the lake. Both parks, Doctor's Creek and South Sulphur, seem to work off the same simplex net. Hope this helps? There is a TPW repeater located nearby on 159.270 MHz (but I am unsure of the tone) and I sometimes hear traffic concerning Cooper Lake. Hope this helps?