On 12/24/2015 9:56 PM, Dave Marthouse wrote:
Scott,
What kind of antenna system was TWR using when you visited? Were they
directional at that time? I assume that their pattern by the time you
were there was directed more to South America.
It was a five-tower directional, but an unusual one in that only the
center tower was driven. The other four in a parallelogram around the
center tower were passive and could be detuned as needed to create
different DA patterns. They had one south-pointing pattern to serve
South America at night, then went ND for the morning hours to serve the
Caribbean, and could also steer the array to point north for a few hours
a day. It was more like a SW antenna setup than the typical MW array.
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