[mythtv-users] UK: Problems tuning Hauppauge NOVA-T500 (DSO related?)

Tony Sauri hoiho.nz at gmail.com
Fri Jan 20 11:22:28 UTC 2012


On Thu, 19 Jan 2012 08:37, Gavin Whitehead wrote:
> On 16/01/2012 06:22, Tony Sauri wrote:
> > On Mon, 16 Jan 2012 12:15, John Pilkington wrote:
> >>> I'm in the process of building my first MythTV box and I am currently
> >>> testing my tuner cards.  I'm having trouble getting my Hauppauge WinTV
> >>> NOVA-T-500 to tune to the DVT-B channels (Sandy Heath transmitter in
> >>> the UK).
> >
> > In addition to ensuring you always do a cold reboot power into your Myth
> > Backend  also make sure the Low Noise Amplifier is turned on.
> >
> > Put these lines into a file in /etc/modprobe.d
> > #>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> > #
> > #  Turn on the Hauppauge-T-500 DVB CARD  LNA (Low Noise Amplifier)
> > #
> > options dvb_usb_dib0700 force_lna_activation=1
> > #>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> >
> > Tony Sauri
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://www.mythtv.org/mailman/listinfo/mythtv-users
>
> Thanks Tony.  I'll do that.
>
> By the way, having Googled around this config change I can see lots of
> pages saying you should do this - but none explaining why.  Any ideas?
>
> Gav

I dont know the technicalities I only know that I could not pick up any 
transmitters with my card until I had turned on the LNA.

I have noted Kark Dietz's response and that makes me speculate on signal 
strengths at a locality. Perhaps he receives such a good signal that turning 
on the LAN overloads his tuner. But as I said that is just speculation.

Here in Wellington NZ I have a line of sight path to the transmitter of about 
20 Km's.  and I NEED the LAN on to get the tuner to respond in any way.

Tony


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