[mythtvnz] Does the HVR 900 have an LNA setting orsomethingsimilar?

[Alan Walls]

A follow up.

As expected, the newer driver doesn't have anything that looked like an LNA setting.

I also downloaded PowerCinema onto my windows machine so I could view the DVB-T stream on Windows.  Viewing TV was flawless and it reported a strong signal strength.

On my Linux box both Myth and dvbtune reported matching low signal strengths, at times last night it was down to 3%.  Dvbtune had no trouble locking onto the signal but unexpectedly always showed zero SNR and the signal strength appeared not to change, until I stopped and restarted dvbtune.  I'm starting to not trust the statistics from the linux driver.

I later discovered I had "real time thread priority" set in my frontend.  Removing it made a big difference but the picture is still not perfect.



-----Original Message-----
From: mythtvnz-bounces at lists.linuxnut.co.nz [mailto:mythtvnz-bounces at lists.linuxnut.co.nz] On Behalf Of Steven Ellis
Sent: Monday, 30 March 2009 2:02 p.m.
To: MythTV in NZ
Subject: Re: [mythtvnz] Does the HVR 900 have an LNA setting orsomethingsimilar?


On Mon, March 30, 2009 1:56 pm, Nick Rout wrote:
> On Mon, Mar 30, 2009 at 12:46 PM, Steven Ellis <steven at openmedia.co.nz>
> wrote:
>>
>> On Mon, March 30, 2009 12:31 pm, Alan Walls wrote:
>>> :-(
>>>
>>> I'll check my setup tonight anyway because I needed to get the latest
>>> driver.  Intrepid's driver didn't work for my HVR900 which is the newer
>>> rev B2C0 model.
>>
>> You can see all my postings about the HVR900 here
>>
>> http://www.mythtv.co.nz/mythtv/category/em28xx/
>>
>> I have the older model and there isn't a LNA. In general it will work
>> with
>> a reasonably low signal.
>>
>> If you want to check your signal strength try dvbtune with the correct
>> mutiplex frequency. Here is my output for the three auckland multiplexes
>>
>> mythtv at mythtv:~/dvb/dtt$ dvbtune -c 0 570000000 -m
>> Signal=48316, Verror=0, SNR=59624dB, BlockErrors=0, ()
>
> Is that 48316 out of 65535?

I don't know as these numbers seem to vary from tuner to tuner.

Oh and I just realised there were off my freecom DVB-T stick as I don't
have my HVR-900 plugged in at the moment.

Steve


--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven at openmedia.co.nz
website - http://www.openmedia.co.nz

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