Amplifier on Cable Modem Line in W.O.W. http://www.dslreports.com/forum/r22620226 en Fri, 04 Dec 2009 14:36:34 EDT Fri, 04 Dec 2009 14:36:34 EDT Re: Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22628166 Goober : Yeah, the amp seems to be working fine. Because MoCA can't work through most cable type amps, I had to put it in right were the line splits to go to the modem. Obviously, when you do that, you end up amplifying the noise as well. For me, it resulted in a 3dB loss in SNR. But, I don't think that hurt me too bad.]]> http://www.dslreports.com/forum/remark,22628166 Mon, 29 Jun 2009 12:26:06 EDT Re: Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22628037 Phasewolf : Ok just checking because I could not for the life of me understand why you could not use a basic amp to help out with loss.]]> http://www.dslreports.com/forum/remark,22628037 Mon, 29 Jun 2009 12:02:44 EDT Re: Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22625304 Goober : They can't. Joker was living up to his 'nym.]]> http://www.dslreports.com/forum/remark,22625304 Sun, 28 Jun 2009 19:45:48 EDT Re: Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22624553 Inflex :
said by The Joker See Profile :

They can disconnect you permanently. :p
BS]]> http://www.dslreports.com/forum/remark,22624553 Sun, 28 Jun 2009 16:25:40 EDT Re: Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22624306 Phasewolf : OK then what is the issue with using a amp that they would disconnect you for? ]]> http://www.dslreports.com/forum/remark,22624306 Sun, 28 Jun 2009 15:15:18 EDT Re: Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22622966 The Joker : They can disconnect you permanently. :p ]]> http://www.dslreports.com/forum/remark,22622966 Sun, 28 Jun 2009 05:59:02 EDT Amplifier on Cable Modem Line http://www.dslreports.com/forum/remark,22620226 Goober : I know that amps on a cable modem line are discouraged. But, my question is, what problems will a person notice if they do that?

In my case, I bought five Verizon MI424 routers and have used them as MoCA devices. It works very well. But, I've had to split lines quite a bit. As a result, my cable modem numbers were right on the edge of acceptable. These were the numbers:

Downstream
Freq/Power: 627.000 MHz -15 dBmV
Signal to Noise Ratio: 36 dB
--------------------------------------------------------------------------------
Upstream
Freq/Power: 37.500 MHz 48 dBmV

Now after adding the amp I get:

Downstream
Freq/Power: 627.000 MHz -1 dBmV
Signal to Noise Ratio: 33 dB
--------------------------------------------------------------------------------
Upstream
Freq/Power: 37.500 MHz 50 dBmV

Those numbers seem okay to me. And, I haven't experienced any problems and the speedtests seem to give me my normal speeds.

Anything to look out for?]]> http://www.dslreports.com/forum/remark,22620226 Sat, 27 Jun 2009 12:01:22 EDT