High-Level Line Extenders

Most if not all of these Channel Master Satellite products are discontinued. I just keep this web page up for reference.

I will try to have some alternative products listed

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5117IFD Satellite IF - High-Level Line Extender Discontinued

5217IFD Dual Satellite IF - High-Level Line Extender Discontinued

These units are line powered amplifiers with very high signal handling and cable slope compensation. They are intended for use with long runs of cable, such as in an office, shopping complex or MDU installation.

These amplifiers may be used in large, tapped trunk IF distribution  systems. They may be cascaded with an amplifier placed after a cable section having a loss equal to the amplifier gain. When a source of signal is required at a point along the cable run, a directional tap from Channel Master's range of ultra-wideband directional taps should be inserted in the trunk line. A DC blocked termination, such as the Channel Master Model 7184 should be placed at the end of the trunk line. Depending upon the signal levels out of the LNB, it may be necessary to space the first amplifier some distance from the LNB or use a power passing attenuator such as Channel Master Models 2803IFD, 2806IFD or 2810IFD.

Model 5217IFD contains two identical amplifiers for use in dual polarization distribution networks. Note that it derives power for both amplifiers from the +18V trunk line only (the same as Model 5213IFD). Its input voltage range is 15-22V. Model 5117IFD is ideal for use in single polarization distribution networks or where a satelilte receiver is operated at a very large distance from the LNB. Both models include a voltage regulated supply. Model 5117IFD has an input voltage range of 12-22V, making it suitable for use on either polarization of a voltage switched system.

The Channel Master Model 8002IFD, 13V and 18V LNB supply is ideal for powering these units. Note that Model 5216IFD Headend Amplifier is similar to Model 5217IFD, except that it includes a 117VAC power supply and also provides LNB powering.

PERFORMANCE SPECIFICATIONS

                                                                           5117IFD            5217IFD (each amplifier)

Passband                                                           950-2050            950-2050       MHz          

Gain                        950 MHz                              13.0                     13.0            dB                                                                                        1200MHz                              14.5                     14.5            dB                                                                                        1450MHz                              16.0                     16.0            dB                                                                                         1750MHz                              17.0                     17.0            dB                                                                                         2050MHz                              16.0                     16.0            dB      

Input Return Loss                                               13                        13               dB       

Iutput Return Loss                                              13                        13               dB  

Noise Figure                                                          6                           6               dB        

utput Capability  16 channels, -40 dBc IMD        -12                      -12          dBm per channel

Isolation            Amplifier A to Amplifier B           N/A                       50              dB               

Voltage Requirements                                      12-20                   15-22           VDC      

Current Requirements                                          85                       175            mA            

DC Power Pass                                             Both directions      Both directions               

Cascade Performance

In all cases, it is assumed the input level to each amplifier is the same (amplifier gain at 1450 MHz is equal to cable loss at 1450 MHz). It is further assumed there are 16 channels into each amplifier. The performance quoted is third order intermodulation distortion at the output of the final amplifier. Systems should be designed such that third order distortion products at the output of the final amplifier do not exceed -46 dBc.

                                                   Third Order IMD at the output of the final amplifier

Input Levels                                                   1 amp            2 amps         4 amps        

16 channels at -30 dBm per channel                 -44                -38             -32        dBc          

16 channels at -35 dBm per channel                 -54                -48             -42        dBc              

16 channels at -40 dBm per channel                 -64                -58             -52        dBc

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