I have one of my Winegard 76cm Ku dishes on 83w for the RTN/RTV feeds. It is painstakingly adjusted for the best possible signal. Reception is perfect at 90- 95%Q most of the time, but quality will drop to 65- 70% with heavy overcast. Rain will cause intermittent "blocking" of video at 45-50%Q, and heavy rain will cause loss of usable signal at around 30-40% on the CNX Mini receiver.

The NBC feed will max the Q meter here on this setup, and it will remain viewable even when the weaker RTV signal is blocked by weather.

I am at 46N Lat. 116W Lon.