Radio Interference - Dish Network Satellite Receiver User Manual

Appendix

Radio Interference

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 unde-
sired 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:
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:
•
•
•
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.
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• 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.
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