Radio Interference - Dish Network 311 User Manual

Radio Interference

EchoStar Technologies LLC declares that this device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
1. this device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.
Modifying this receiver may void your authority to use the equipment. This equipment has been tested and found to
comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Refer to Troubleshooting in Chapter 4 for a detailed description of recommended customer actions.
If none of the remedies on the previous page stops the radio interference, you should contact a licensed radio/
television technician, your satellite dealer, or call the Customer Service Center at 1-800-333-DISH (3474), for
assistance.
Signal Strength Present at the Television
The attenuator provided with the satellite receiver will limit the signal present at your television set to below the FCC
signal strength limit of 75.6dBuV. If you choose not to install the provided attenuator, you must ensure that the signal
strength present at the TV set does not exceed 75.6dBuV.
Connecting to an Off-Air Antenna
In order to receive local broadcast channels, you may wish to install an off-air antenna into your TV distribution
equipment. When installing the off-air antenna, you must be careful to meet certain FCC regulations.
There are many devices that allow you to connect your antenna to your in-home distribution system such as splitters,
and amplifiers. The FCC requires that the isolation between the antenna port and the network port of your system
meet the following:
• 80dB from 54 MHz to 216 MHz, at least
• 60dB from 216 MHz to 550 MHz and at least
• 55dB from 550 MHz to 806 MHz
Measuring the isolation of a device requires specialized equipment. In most cases, it is easier to purchase a splitter or
amplifier with the correctly specified isolation from your local satellite television retailer. The above requirements
are extracted from 47CFR15.115. For the complete text please visit www.FCC.GOV.
FCC Compliance
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