[mythtv-users] Poor Signal Strength

Brent Bolin brent.bolin at gmail.com
Thu Mar 18 14:30:32 UTC 2010


On Thu, Mar 18, 2010 at 9:21 AM, Devin Heitmueller
<dheitmueller at kernellabs.com> wrote:
> On Wed, Mar 17, 2010 at 12:53 PM, Simon Faulkner <simon at titanic.co.uk> wrote:
>> Hi All,
>>
>> I have been trying to get Myth running for several years on and off.
>>
>> I now have a Ubuntu box with a pair of Huppauge HVR 3000 DVB-S (T) Cards
>> which runs really well and I *LOVE* it.
>>
>> Thank you to all the folks who have worked to get it this far.
>>
>> My slight problems is that I get poor signal strength
>>
>> Signal 5%
>> S/N 4.8Db
>
> This is likely just an issue with the representation of the counters.
> Because there is no uniformity in terms of the units (the V4L-DVB spec
> was not specific enough), every card represents the raw data
> differently.  Hence, for people who happen to have the same cards that
> the MythTV developers had, the numbers look fine.  For everybody else,
> the information provided is complete garbage.
>
> You can run femon and see the raw values.  And given who authored the
> demodulator driver, I would guess the SNR is probably in 0.1dB
> incremements (meaning an SNR of 0x00b4 would equal 18.0 dB)
>
> Devin
>
> --
> Devin J. Heitmueller - Kernel Labs
> http://www.kernellabs.com
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>

My Dvico HDTV7 card does not indicate receiving a signal at all, but
works just fine.


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