Reddit reviews Cable Modem & MOCA Premium Coaxial 2-way Splitter ideal for Bidirectional RG-6 RG-59 Communications

Antronix CMC2002H

That's what we install in every location. Antronix makes good splitters, made of real metal. They are very solid and durable.

Edit : I work for a cable ISP, hint hint.

You can use a coax splitter like this one from newegg! (http://www.newegg.com/Product/Product.aspx?Item=9SIA8SV3805888) https://www.amazon.com/Premium-Coaxial-Splitter-Bidirectional-Communications/dp/B00NE0G23W/


Edit:Actiontec adapters can be a bit pricey so I used these and have never had a problem with them https://www.amazon.com/Yitong-Technology-Ethernet-Adapter-YTMC-51N1-M2/dp/B019MDRX5A/r

How's the coax from the street to the modem? Old? Worn connectors? The modem has "automatic gain control" that automatically adapts the power levels based on the noise signature of the incoming signal. This is why you're seeing the power level jump around. The cable company can temporarily adjust this level for diagnostic purposes but it'll reset after they're done doing with their testing. The AGC will go wonky if there's bad cabling mixed with bad weather. Also, and slightly less likely, the AGC circuit in the modem could be going bad.

For now, I'd consider at least changing out your connectors and making sure nothing is shorting out from recent rain storms. Also if you have any splitters in the line between the road and your modem, consider getting new ones. Splitters go bad frequently.

I'd put my money on the problem being somewhere between the back of your modem and the tap from the street. You could check it with a Coaxial Distance to Fault (DTF) meter (Fancy cable service people will have one).

Cable Modem & MOCA Premium Coaxial 2-way Splitter ideal for Bidirectional RG-6 RG-59 Communications https://www.amazon.com/dp/B00NE0G23W/ref=cm_sw_r_cp_apa_i_AafDCb5GPA84G

I would suggest one of these two - 3 | 2

Exact same thing happened to me. Issue we had was our COAX splitters. We replaced any old splitters (i'm talking 5-10 y/o) with ones specifically meant for 2-way MoCA like these. Worked like a charm. Hopefully our root causes are similar!

Aside from what everyone else has advised, you are missing the USB cable between the Tivo and the Tuning Adaptor, you should also use a splitter so you go from Cable line, to 2-way splitter. From 2-way splitter to TiVo and 2-way splitter to Tuning Adapter. In my case, the Tuning Adapter was introducing so much loss in its passthrough connection that I was getting all kinds of pixelation and signal drop. Also, get a good quality splitter if the cable company did not provide one. (They did for me in my self-install box but I tried to not use it.) This is a good one: https://www.amazon.com/Premium-Coaxial-Splitter-Bidirectional-Communications/dp/B00NE0G23W/

Is your TV even a HDTV? Please tell us you're not one of THOSE people, that has a HDTV set and a digital cable box, but connects them using a coaxial cable so all you ever see is standard definition (yes, unfortunately there are people like that).

In any case, your problem is that the coaxial cable output (the one labelled CABLE OUT) is standard definition analog NTSC, which is neither "Digital ATSC" nor "Digital QAM". You need to be connecting the cable that comes INTO the cable box (the one currently connected to the CABLE IN connector) to your WinTV. Then, scanning one or the other of those should work PROVIDED you are in an area where not all cable channels are scrambled. If that works, then you need to get a cable splitter (looks like https://www.amazon.com/Premium-Coaxial-Splitter-Bidirectional-Communications/dp/B00NE0G23W) and run the cable into the input on that, then connect the two outputs to your cable box and to your digital tuner.

However if you still can't scan anything, it means you either hooked it up incorrectly, or your cable system has no unencrypted channels. In any case, if you want to receive encrypted channels, you will either need a tuner that supports a cable card (and that assumes you can still get a cable card from your cable company, since I have heard they are being phased out), or you will need to be content with the free unencrypted channels (if any). Or, you could put up a TV antenna and run that into your tuner card to get your local channels, then use a streaming device such as a Roku to watch content from pay channels (but for that you would need a HDTV; I don't think most streaming devices have a coaxial output).

And for crying out loud, if you have a HDTV, then before you do anything else get a HDMI cable to connect the cable box to the TV, so you can enjoy true high definition!