I am using a Cellantenna CAY15 15db yagi which costs about eighty bucks which seemed more cost effective to me than spending a lot of time finding the stock to build one. Works well and pattern is pretty narrow. They use a female TNC termination on the antenna. _www.cellantenna.com_ (http://www.cellantenna.com) _Click here: Yagi Directional Antennas_ (http://www.cellantenna.com/Antennas/yagi.htm)
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