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#1
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Cable TV splitter and internet connection
I use Charter Communications as my ISP. At one outlet in the house I
have a CTV splitter to connect to both a TV and my cable modem. Worked well for 2 years. Then, all of a sudden, no internet service. Chater finally asked if there was a splitter. When removed the internet service returned. Replaced with a new, more expensive splitter and all is well with both TV and internet. Charter said that splitters go bad. Rarely, but it does happen. Wondering how a splitter can go bad. Isn't it a simple voltage divider with an impedance match to 75 ohms? Are there capacitors in there that could go bad? Figured someone here would have opened a splitter at one time or another. Thanks. Thomas |
#2
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On Sat, 29 Jan 2005 06:57:09 -0500, Thomas wrote:
I use Charter Communications as my ISP. At one outlet in the house I have a CTV splitter to connect to both a TV and my cable modem. Worked well for 2 years. Then, all of a sudden, no internet service. Chater finally asked if there was a splitter. When removed the internet service returned. Replaced with a new, more expensive splitter and all is well with both TV and internet. Charter said that splitters go bad. Rarely, but it does happen. Wondering how a splitter can go bad. Isn't it a simple voltage divider with an impedance match to 75 ohms? Are there capacitors in there that could go bad? Figured someone here would have opened a splitter at one time or another. Thanks. Thomas I never opened one. I always believed they were intermeshed coils, or basically an isolation transformer similar to an audio transformer that allows one 8 ohm input and two 8 ohm outputs. Of course, CTV splitters have much higher frequencies to deal with and are much smaller. They also generally have a very high loss figure 7 db or more. -- Buck N4PGW |
#3
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They may have moved the frequency of the carrier carrying your internet
serives to a higher frequency where your old spliiter may have had had lots of loss. For a cable modem, the splitter has to work at low frequencies as well for the return signal and any amplifiers that you have in line must also work in reverse. Mark |
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