Quick Question??

[GRIM]

Quoted from the contract
'DCC will provide 12Mhz of bandwidth downstream and 12Mhz upstream on one (1)RG-6 coax cable from the distribution box at the side of each building or each floor plan as per the approved system design, to a central wiring point in each apartment home'
Here is my question how much bwidth is 12Mhz?
http://www.grimx.com/images/rip.jpg

[Kip Patterson]

The ratio of bit toHz depends upon the modulation method, which is to say there isn't really an answer.

On the original T-1 lines, the modulation used was Alternate Mark Inversion. That was good for 1 bit per Hz. The downstream channel of DOCSIS modems uses some for of QAM and gets about 27mbits for 6mhz, or 5.5 bits per Hz.

I really don't understand the spec. Is DCC a cable company? What does one do with 12 Mhz?

[GRIM]

Corrections DDC Direct Digital Communications. But the 12Mhz is correct unless the had a typo wich I doubt?
http://www.grimx.com/images/rip.jpg

[Kip Patterson]

I looked at the DDC site and I don't understand what they are providing. They talk about direct satellite, and that's all they seem to provide details on, but then they list their served locations, and say that the satellite service isn't available at about half of them.

What I meant about the 12 MHz is what are they distributing that only takes 12 MHz, and what are they using 12 MHz upstream for? Do you have any sense of what these folks are doing?