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37m cable from modem to BUC ??

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ahmedms84
Ex Member


Sep 17th, 2009 at 8:49pm  
please what is the best cable that i can used from Modem to BUC 8 Watt KU band the length between the modem and the buc is 37 meter ??
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USN - Retired
Ex Member


Reply #1 - Sep 18th, 2009 at 12:55am  
Well, most providers have specifications pertinent to their own equipment. But under most circumstances, 37m should not be considered a long cable run. My own is in the neighborhood of 35m. I use Belden 1829BC RG6/U; 3GHz swept, flooded, solid copper center conductor, 6.4 ohms/1000'. Measured resistance on my installed 220' loop is 1.55 ohms. Not bad - when you consider the loop includes 12 compression connectors, 3 barrel connectors, and two trips through the ground block.

//greg//
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« Last Edit: Sep 18th, 2009 at 1:16pm by N/A »  
 
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HRINS
Ex Member


Reply #2 - Sep 18th, 2009 at 10:10am  
which is better to use LMR400,LMR600,RG11 or RG6 cable ??
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Eric Johnston
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Posts: 2107
Reply #3 - Sep 18th, 2009 at 10:56am  
Here is a table referring to a LinkStar modem with external power supply.
...
For an 8W BUC do make sure you use cable with low DC resistance.
Low DC resistance cables have larger diameter centre conductors and larger diameter outer conductors (for 75 ohm RF impedance) and the large diameter centre conductor may not be suitable for the F sockets at each end in which case you will have to buy special F connectors which have a centre ferrule/pin as a specific part, with crimp/solder for the cable centre conductor.  You may need a special axial crimp tool for the outer.  Get F plugs that match the cable.

Best regards, Eric.
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« Last Edit: Sep 18th, 2009 at 12:45pm by Admin1 »  
 
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