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If signals are coming from nearly opposite directions (+/- 20-30°), you're usually better off taking the reflector panels off and making the DB8e bi-directional, unless there's a compelling need for stronger reception in one direction over the other. Doing so eliminates around 3 dB of combiner loss that otherwise occurs when the elements are not phased.
The rivets have to be drilled out to remove the reflectors. If you need to put them back on, standard #10 screws and nuts work well.
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