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Antenna:The antenna is a 32 inch telescoping chrome plated antenna. It is suggested that the antenna should always be fully extended unless you are very near the transmitter otherwise you will not receive reliable data. In distant areas from the transmitter or in areas blocked by terrain it may be necessary to have an external antenna such as a TV antenna. Almost any VHF antenna will work.The antenna is connected on the back of the unit with a “F” (cable TV type) connector. A wire plugs into the antenna connection. To use an external antenna, unplug the wire from the “F” connector and attach the external antenna using the screw on “F” connector. Usually a TV antenna will be adequate. Do not connect to your cable TV system because in the event of a power failure or storm Cable TV service is usually the first to fail and you would not receive your emergency message. DB9 connector (RS232 data port):The unit has a nine pin connector for data export using a null modem cable to a PC terminal port. Use a null modem 9 pin cable between the computer port and the unit. 9600 baud 8 data bit, No parity, 1 stop bit. |
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