Long Range Tests
Long distance stations are picked up from San Diego, about 130 miles away. There are no significant mountain peaks in my line of sight. Due to the distance, the line of sight is actually being blocked by the curvature of the earth. San Diego is a coastal town, most of the path the signal travels is along the coastline. Because of this, weather becomes a critical factor in signal reception. In favorable weather conditions, signal levels can be very high with the help of tropospheric ducting. In bad weather conditions, the moisture and fog in the air can create a "wall of water". The lack of the "ducting" can cause the signal to completely disappear. A high gain directional antenna is required to pick up these distant stations, but you will still need good weather conditions for reliable reception.
Note: Signal level refers to the Dish 6000 indicator which measures the signal quality based on percentage of errors. As long as the indicator stays above 48-50%, the signal will lock. I assume that if you have over 50% errors, the Dish 6000 does not have enough good signal to decode properly. A reading of 100% would indicate no errors in signal. I have found that at 47% I will see pixelation in the picture and below 46% the picture will drop out completely.
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Televes Pro-Range 1046 (Dat75)
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