Philips DR500 manual Connecting Multiple Receivers to One Antenna, Recommended Equipment

Connecting Multiple Receivers to One Antenna

Multiple DR500 Receivers can be connected to one antenna. However, to avoid damage to either the antenna LNB and DR500 Receiver, the following items must be used:

•Correct splitter(s)

•Proper line amplifiers

Line amplifiers may be required when using a signal splitter and/or when long coaxial cable runs are required from antenna to receiver. All splitters and line amplifiers should be rated for satellite IF processing with a minimum bandwidth of 950 MHz to 1450 MHz.

Since power is delivered to the LNB and line amplifier by the DR500 Receiver (18 VDC via RF IN connector), splitters should have one DC power passing port. All other ports must block DC or have equivalent circuitry that only permits one of the DR500 Receivers to power the LNB. Never connect via power passing splitters. Additionally, the receivers not delivering power to the LNB should have their LNB power output switched OFF using Preset 160. Failure to do so may result in severe damage to the antenna LNB and the DR500 Receivers

The line amplifier should be inserted just prior to the input of the splitter (not after the antenna LNB). For best performance line amplifiers are typically inserted every 150 feet.

Recommended Equipment

The following equipment is recommended when multiple receivers are connected to one antenna:

•High frequency splitters

−QINTAR HFS-2 and HFS-4. Two and four port splitters that pass power from one port.

−QINTAR HFS-2WB and HFS-4WB. Two and four port 5 to 2050 MHz wide band splitters with a built in zener diode circuit to protect DC return back to the DR500 Receiver. These splitters can be used in installations requiring power passing to only one port.

•In-line satellite amplifier

−QINTAR LA-2050. This line amplifier has a bandwidth of 10 to 2050 MHz. It is typically powered by the DR500 Receiver 18 VDC power.

•Coaxial Cable

−For short runs, under 150 feet, use a 75 ohm RG-59 coaxial cable.

−For cable runs over 150 feet, use higher quality RG-6 or RG-11 cable to minimize antenna signal loss and amplifier requirements.

DR500 (E-28)

Rev. C 10/94