[mythtv-users] OT: Signal-to-noise ratio

Allen Edwards allen.edwards at oldpaloalto.com
Wed Aug 27 05:21:26 UTC 2008


On Tue, Aug 26, 2008 at 9:14 PM, Bob <mythtv at cox.net> wrote:
>
>> Check all cable connections, especially into the card if your
>> reception on other devices is satisfactory. The signal itself seems
>> strong, so possible causes of noise in the signal path should be
>> investigated.
>>
> I ran a coax cable from the cable box on the exterior of my house
> directly to my DVICO tuner and I am still getting a lousy
> signal-to-noise ratio.  Anyone have experience with this?  Could
> something inside my myth box be generating the noise?
>
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The kind of coax you use can make a large difference in a cable system
because cheap coax will let OTA signals in and they will look like
noise to the cable signal.  Cable companies use RG6U Quad Shield Coax
for this reason. Typical Radio Shack Coax will give the problem you
are seeing.

Allen


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