still no comm line between scanner and pc

[satang-52]

I downloaded the latest driver from unidens site. this was usb-1,I loaded the arc pro xt software,I kindof got the idea of how it loads to the scanner but when I try to remove view or add selected frequencies,I get a message
that the serial port is being used by another device. I have a sony ar 520 laptop and I was wondering if having
the logitech mouse wireless recieving device plugged into the back of the pc had any thing to do with that
message. I only have 2 usb ports one in the back,near the power input and one on the right side. I also would
like to ask what position does the scanner have to be in off-on switched on to programming mode etc. do I have
to deleat all factory stored frequencies. thanks any help would be apprieciated. got to go now its 7:35 and i get up at 2am for work. thanks in advance.

[wonabet]

New to this too, but getting there. You definitely have to have your scanner turned on for it to communicate. I have the same mouse and that has nothing to do with your problem. Mine is communicating fine, however it takes a little playing with to get the port. I use free scan and it has an auto locate for a port. If that does not work you go to your device manager. Just click on control panel, then double click on SYSTEM. I have Windows Vista, so after i click on system I see DEVICE MANAGER on my top left of the screen. Click on DEVICE MAN,Go down to where it says PORTS ( COM & LP) double click the com & lp and it should show you an open port or the one for your cable. Mine shows COM 3. If you only have 2 USB ports, you may want to invest in a HUB, to give you more open USB ports.Like I said, I downloaded FREESCAN and what took me hours to enter manually, only took seconds. Hope this helps. Other will jump in to help you, its a great site.
Joe

[Kennrth]

What Model radio are you using. 996 or 396? Have you made a successful connection to the radio? Are you running Virtual Radio or bandscope. This uses the serial port. You will get this message if your trying to upload or download if either one is running. If so shut it down and your in business. Don't use virtual radio or bandscope when uploading or downloading.
If this is not the case;
Then the serial port XT ARC is using is already in use. Make sure you radio is on.
In the menu find scanner then got to Communications settings and see if you can let it detect your com port. I heard people hacving problems with fast board rates with USB-1. So you may want to go to your radios menu setting comport section and set baud rate to 9600. Also I think Arc xt used comports 1 to 8. USB has an anoyying habit of assigning itself higher up to 28. Need to lower that 1-8 see you drivers follow directions above.

[Dak48]

You just need to identify what Com port the USB cable is using. If you have an internal modem, it is likely on Com3, so your USB cable could be Com4 or higher. There should be a setting somewhere in your scanner software to select the port. If that fails, then there is corruption with the driver and it will need to be uninstalled and then reinstalled.