RG-6/U Cabling Question....

[davila99]

Can anyone tell me if the internet feed from the cable company and direct tv can work together on the RG 6/U
cabe which was pre wired/used for all connections to transmit signal within the house OR do I need 2 lines.....

 

[bcastner]

DirectTV satellite?

There is voltage on those lines that I think could be a problem. This is not true with cable systems.

 

[wires]

Possibly...

For Internet connectivity cable modems use frequencies outside the normal bandwidth required for television. Depending on the system the downstream signal is in the 700mHz range and the upstream (return) in the 40mHz range.

http://www.cisco.com/warp/public/109/cable_faq_rf.html

Combining basic cable (ch2-ch125 55mHz-800mHz) and DirecTV (receiver->dish) with a diplexer is very common. Here is a representitive device:

http://www.sat-lnb.com/diplexer.shtml

You could try diplexing the DSS (DirecTV) and cable modem signals but it might not work since the cable modem up and down stream frequencies are close to the cut-off points of most diplexers. Additionally there may be a problem with the upstream path being blocked by the diplexer since some RF devices are unidirectional.

If you try it be sure to post your results!

 

[davila99]

I posted this question and I can tell you that combining the two signals on the same line with a "diplexer" will work..I have been enjoying DirectTv and Broadband cable for
2 weeks...

 

[wires]

Glad to hear it worked for you.

My concern was the closeness of the cable modem frequencies to the diplexer cutoffs. The other concern about voltage is not a problem since diplexers for DSS only pass voltage on the DSS ports.

What make/model of diplexers did you use?