You wouldn't have to use a MoCA filter as there wouldn't be any possibility of data exchange via RG-6 cabling. With a second cable run from the demarc to the modem, that allows the end user to isolate the external ISP connection from the internal Intranet which runs over MoCA adapters. If you can do that yourself, so much the better. Even if one had to call in an electrician to snake an RG-6 and possibly ethernet cable from point to point, I suspect that it would be cheaper, compared to buying yet another round of MoCA adapters. Personal opinion, for MoCA users today, it might be much cheaper to consider running an additional RG-6 cable run between the Demarc and the modem location. Its just a question of when, not if, but it might take a very long time before that ever sees practical use out in the field. As DOCSIS frequencies move upwards beyond 1.2 Ghz, that will eventually result in MoCA frequencies shifting upwards as well.
If and when that happens, having a 1.2 Ghz MoCA POE filter might be advantageous.įwiw, the potential overlap between the DOCSIS frequencies and MoCA frequencies is definitely recognized. Just continue using the existing MoCA filter, keeping in mind that Spectrum might end up changing their channel configurations for the QAM and OFDM channels. If you didn't see any difference between the the two configurations, that would translate to "don't bother chasing down a 1.2 Ghz MoCA POE filter". Installing the 5 to 1002 Mhz MoCA POE filter would show you if Spectrum is actually using frequencies above 1002 Mhz. Cable ingress point -> 5 to 1002 Mhz MoCA POE filter -> Modem -> ethernet -> Router ->ethernet -> PcĮven if you had to buy a 50 or possibly 75 foot ethernet cable to run reach the pc, it would, or should really show you the highest possible data rate if you had a very short run from the cable ingress point to the modem. Cable ingress point -> Modem -> ethernet -> Router ->ethernet -> PcĢ. Personal opinion, it would still be worth running the following test configuration, just to see what the results are:ġ. It just depends on the current signal levels and the channel types in use, as in QAM and/or OFDM. At the end of the day, that additional loss might be no problem, or it could cause significant issues. If you're able to log into the modem to check the signal levels, you would be able to determine if an additional 2 to 2.5 dB loss if going to cause problems. So, keeping in mind your original circuit diagram, that 3.5 dB loss might be a problem, depending on where your current modem signal levels happen to be. I'm assuming that the 46 dB Min figure is at 1218 Mhz and that there's a significant roll-off as you approach 1218 Mhz. I think the normal ingress loss is around 1 dB: If you look at the spec sheet, you can see that the filter has an ingress loss of 3 dB. I suspect that you would have to call the company to see if you can obtain one.
I have no idea as to where one might obtain one of those filters. OFDM frequency data isn't necessarily broken out for the Level 1 techs, so, you might have to chat with the Level II techs just to ask a relatively simple question. Its possible that the Level 1 tech support might not be able to tell you if they don't have the ability to dive into the frequency ranges. Calling tech support and simply asking what is the highest frequency range in use for your particular neighbourhood node. I don't know if Spectrum is still using the lower 5 to 42 Mhz range for the upstream frequencies:Ģ. Logging into the modem to check the Downstream Frequency and perhaps the Upstream Frequency lists. You should be able to determine that by either:ġ. That filter would allow you to run DOCSIS frequencies, up to 1218 Mhz, if in fact Spectrum is actually using frequencies above 1002 Mhz. If you skip down to the Low Bandpass filters, you can see the filter indicated above.
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