Folks ! I got simple GPS antenna for my Ipaq 3715, and it worked well with all apps in pocket. Now Im trying to connect this antenna to car pc, but cant connect it properly. Antenna connector has four wires inside - Red for +5V, Black for ground, green for Rx and Yellow for Tx of ipaqs serial port. I connected it to + & - of free USB port for power supply, and green & yellow wires to 9 pin COM port of my carputer ( pin 2 & 3 of 9-pin COM port connector of motherboard ) . Now antenna works , and gets signals from sattelites, I see it by built-in led on antenna, but FreeDrive not detects it. I set in FreeDrive port COM1, Speed 9600 . Wats wrong ??? Ipaq's TTL levels not the same PC TTL levels ? Or may be I need set logical "1" at DTR pin of 9-pin connector to enable data transfer ? Please, any ideas ...
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