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===antenna===Use the long wire antenna for best range. Try to run it as straight as possible, either vertically or horizontally although vertical polarization is probably best. If you run the unit on full power you will definitely want to use the wire antenna as the short telescoping antenna does not radiate well enough to protect the transmitter from reflected power which could cause damage.The wire antenna is 133½" long (the wire part) and including the screw base would be almost 134".