By eHow Electronics Editor
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Sometimes, an installed dish antenna may start receiving a poor signal for no apparent reason. To determine the cause, check if any trees are obstructing the signal reception. It is possible the trees that did not pose a problem during installation interferes with satellite signal after a few days, particularly on windy days. The type of trees in the vicinity also makes a difference. For instance, weeping willows may cause considerable problems because of their swaying branches. Others that shed leaves in autumn may give a clearer signal throughout fall and winter, while only becoming problematic in summer. Read these steps on how to handle this situation.