[mythtvnz] HD HomeRun vs HVR-2200 for DVB-T?

[Neil Henwood]

On Mon, Sep 09, 2013 at 10:56:37AM +1200, Stephen Worthington wrote:
> On Mon, 9 Sep 2013 07:36:20 +1200, you wrote:
> 
> >On Sun, Sep 8, 2013 at 1:41 PM, Stephen Worthington <
> >stephen_agent at jsw.gen.nz> wrote:
> >
> >> On Sun, 08 Sep 2013 08:00:43 +1200, you wrote:
> >>
> >> >On Sat, 07 Sep 2013 23:35:16 +1200, Steven Ellis <steven at openmedia.co.nz>
> >> >wrote:
> >> >
> >> >> Has anyone here done a comparison on the two devices when dealing with
> >> >> marginal signal issues.
> >> >>
> >> >> My TVNZ and Mediaworks reception is OK but Kordia is a bit marginal on
> >> my
> >> >> HVR-2200, but fine on my Samsung TV.
> >> >>
> >> >> Steve
> >> >>
> >> >I'm in a fringe area (50km from the transmitter,no line of sight) and
> >> >experience occasional pixellation during rain and high winds (mainly due
> >> >to nearby tree movement).
> >> >Both the HVR-2200 and HDHR are about the same for this and about 80% as
> >> >stable as my Panasonic TV.
> >> >
> >> >Paul
> >>
> >> Does your HDHR have dual tuners?
> >
> >
> >
> >All HDHRs have at least two tuners. The older ones have two antenna inputs
> >so no internal splitter, but you need an external so same problem either
> >way.
> 
> No, you have missed the point I am trying to make - it is not the same
> problem at all.  With two inputs and no onboard splitter, you would
> use an external splitter with the correct number of outputs for all
> your devices, say two for the HVR-2200 and one for the TV, and all
> three get the same signal level, a bit less than one third of the
> input signal.  If you have an HVR-2200 with one input and an onboard
> splitter, you use a two way external splitter and the TV gets just
> under half the aerial's output signal level. But the HVR-2200 also
> gets just under half the aerial's signal level at its input, which it
> then splits so each HVR-2200 tuner winds up with well less than one
> quarter of the aerial's output signal level, versus the TV with just
> under half the aerial's signal level.  The problem is that a dual
> tuner device has an internal splitter that you are forced to use in
> series with any external splitter - so any tuner on a dual or multi-
> tuner device will always get much less signal than your single tuners.
> 
> _______________________________________________
> mythtvnz mailing list
> mythtvnz at lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/

This has bought back memories when I setup my Nova T-500. It required a modprobe option to enable the onboard LNA to compensate for the signal split. As I am not sure if the HVR-2200 has a LNA I did a quick Goggle and came up with this.....


http://www.gossamer-threads.com/lists/mythtv/mythtvnz/498115

The thread was too long to read for me, but may of been of interest to OP. YMMV

Neil