Hello
i had small problem two month ago i had problem with pointing my dish to 68.5 Deg E but i manage to solve it but few days later  i began to lose connectivity so i had to do it again but i had to do it properly because i do it last time in rush and my service provider told me to get between 16-17 V and iam able to get 16v .and every thing seem fine . but when i connect my network to internet i found that the internet is very slow so i make several speed test and  the result was very strange some time i got about 200kbps and some times get only 90kbps. so i know definety there some thing wrong so i fire up my isite and found that my Downstream SNR is varies from -10.5 to -11.8 dB and tx power is about -16dBm . and i think i read some where that two variable  had close relationship with the internet connectivity so ineed some help on this since iam completly new to this.

Your downstream SNR is fine.  It is right where it needs to be.  10.5-11.0 is very good.