Side effects of the pollution include packet loss, latency, or straight up loss of bloc sync.īe aware that the filter will also act as a resistor, which can affect your signal strength. Therefore most ISP's have started adding filters to each outlet to keep this out of the way.įor example, much of the time you will have the main feed to the splitter, then the line that goes to the TV will have a filter that prevents any signal passing in the upper 750-1000 range, so the TV equipment won't pollute the data stream for the modem. But some equipment might still pollute the upper area. ![]() So the total spectrum (5-1000) is split up with most of the TV content in the lower portion, and the very high end is usually used for data (750-1000 much of the time). Many cable boxes (especially if you use a Video On Demand service) need to communicate upstream as well to order content. Next, a lot of TV equipment, like old VCR's, can introduce noise' into the coax line, on frequency ranges that didn't used to carry any real signal information. Always use the heaviest grade coax (better shielding) and ALWAYS the screw connectors, never the easy 'push-on' ones. you may also seeing depending on the modem a signal screen shot at 192.168.100.1Ī littel more info on splitting your coax.ĭisclaimer: I work for a cable company as a high-level tech.įirst of all, most ISP's/TV companies now are getting into phone as well and are using more spectrum, so a 5-1000 splitter is a must (up to 2000 optional, it won't hurt) & get a good one. the fcc says a minimum of +5 should be at the house high and low band. remember the loses on the splitter add so in you have one two splitter feeding another two way splitter and they both lose 3.5 culmative then the total is 7.0db. in a typical sitaution you will see a two splitter one leg feeding your cable modem the other leg feeding another splitter. if you want to split for a tv just be sure to verify outside that the cable coming into your house is split the cable modem first most good splitters tell you how much they lose on each leg for example 2 way splitter 3.5db cumlative across the bandwidth on each leg or a 3 way splitter balanced 5.5db on each leg of lose unbalanced 3.5db on one and 7.0db on the other two. Please everyone remember most cable systems aren't 2ghz systems yet the downstream bits usually run between the 500 and 750 mhz range as the upstream is ususally between 5-125mhz depending on the system 5-1000mhz splitters are what the cable industry uses.
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