D-Link DXN-221 User Manual - Page 9

Section 2 - Installation Frequency Planning The DXN-220 is capable of operating between frequency bands of 800MHz and 1500MHz. In order to avoid interference between the DXN-220 device and other devices on the same cable network, DXN-220 device must operate at a frequency spectrum that is different from other devices. • 5-42MHz (High-speed Internet Access Upstream) • 42-850MHz (High-speed Internet Access downstream) • 50-806MHz (Off-Air TV) • 50-860MHz (Cable TV) • 950-2150MHz (Satellite L-Band) One common scenario is where DXN-220, cable television and high-speed Internet service need to coexist. The cable television in United States operates between 50-860MHz while high-speed Internet service upstream and downstream operate between 5-42MHz and 42-850 MHz respectively. Hence, the logical choice for DXN-220 frequency would be between 940-1500MHz. Similar frequency planning approach should be taken into consideration when dealing with Satellite and off-air antenna. Terrestrial Television (Off-Air) If you are receiving terrestrial television service using a broadband antenna, then additional components may have to be installed in order to be compliant with governmental regulations. DXN-220 network signals operating in the 800 to 1500 MHz range should be prevented from radiating out of the antenna by using a small, in-line Low Pass Filter (LPF-860Mhz). This filter will prevent DXN-220 network signals from reaching the antenna. D-Link DXN-220 User Manual