[mythtv-users] DVB-T card with high sensitivity

scratch1701 scratchbuild at gmail.com
Wed Feb 7 23:14:54 UTC 2007


I also have the same problem as the original post: good signal in a
few multiplexes, terrible in one.

I managed to improve the situation with a £5 signal attenuator from Maplin.

http://www.maplin.co.uk/module.aspx?ModuleNo=965&doy=7m2

 It's plugged straight into the aerial-in port of my dvb-t card, and
improved the quality just enough. I tried one of those wall plug
signal boosters, and that only amplified the noise.

/ken

On 2/7/07, Nick Craig-Wood <nick at craig-wood.com> wrote:
> junk <junk at giantblob.com> wrote:
> >  The distribution amp may be a bad idea - unless it's intended for
> >  digital TV, it may not enough bandwidth or sufficiently linear response.
> >  I find my marginal reception was made quite a bit better when I took my
> >  distribution amp out of the cable run.
>
> I found I needed to adjust the input to the distribution amp with an
> attenuator.
>
> I tuned the channel to the worst channel (five in my case) and then
> ran femon.  The number of corrected errors is a very sensitive measure
> of how good your signal is (signal strength is a bit random I find).
> I adjusted the attenuator for minimum errors.
>
> My worst Mux is Mux A which had channel 5 on it.  I get about 0x900 ==
> 2300 corrected bit errors per second on it.  It only rarely gets an
> uncorrectable error.
>
> --
> Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick
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