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When you select Start Scan to scan for broadcasts in Microsoft Windows XP Media Center Edition 2005, the same Terrestrial Digital Video Broadcast (DVB-T) service may be detected multiple times. Each of these duplicate detected services is assigned a channel number in the Media Center Program Guide.
When Media Center scans for broadcasts, it scans the allowed frequency range from the lowest frequency to the highest frequency. Sometimes, Media Center may find the same broadcast on multiple frequencies. In this case, Media Center cannot determine whether the broadcasts are the same.
To resolve this problem, remove the channels that use the same broadcast from the Program Guide. To do this, follow these steps:
Start Media Center, and then select Settings.
Select Edit Channels.
Scroll down to find the listing for the channel that you want to remove.
Clear the channel that you do not want in the Program Guide.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Media Center Technical Support
Because Microsoft Windows XP Media Center Edition was included with your hardware device or system, the hardware manufacturer provides technical support and assistance for this software. Your manufacturer may have customized the installation with unique components such as specific device drivers and optional settings to maximize the performance of that manufacturer's hardware. If you require technical help with Windows XP Media Center Edition, contact your manufacturer directly because the manufacturer is best qualified to support the software that the manufacturer has installed on the hardware.