One dish - Two decoders ??
timo...@yebo.co.za
I am at present receiving dstv via a Panasat 642 decoder and M-net
via an analogue decoder. There is a lot of interference with the analogue
signal (waterfall effect on the right-hand side - about 3 cm wide - and
ghosting). I do not wish to receive the digital Mnet
signal through my Panasat as this restricts my viewing to one channel at a
time.
Is it possible to connect two digital decoders to one dish (and LNB). If
so, must the two decoders be of the same make or can I, for instance,
connect a Multichoice decoder as a second decoder. Will it then be possible
to receive any dstv channel on the Panasat at the same time as
receiving Mnet or the Sentech channels on the other decoder.
Furthermore, about 20 m of cable will separate the two decoders.
Thanks
Timothy
Rick Lugg
This doesn't answer your questions directly, but I had a similar visual
problem that turned out to be related to the fact that my digital decoder
was using a channel for output that was adjacent to that on which e-tv
broadcasts. MNet analogue was reasonable, but e-tv had exactly the kind of
banding and ghosting that you describe. I changed the digital decoder to an
output channel further away and the quality for both improved.
Hope this helps
--
Rick Lugg
<timo...@yebo.co.za> wrote in message news:7kohoi$8hu$1...@news3.saix.net...
Speed
>Hi,
>
>Is it possible to connect two digital decoders to one dish (and LNB). If
>so, must the two decoders be of the same make or can I, for instance,
>connect a Multichoice decoder as a second decoder. Will it then be possible
>to receive any dstv channel on the Panasat at the same time as
>receiving Mnet or the Sentech channels on the other decoder.
Should be no problem - I have two digitals running off one dish - you
need a twin LNB though (with two outlets) - cost around R500. If you
use a splitter on a single cable you will pick up problems with the
Verticle & Horizontal channels as only one DSD can do the switching.
With a Dual LNB the switching is done independantly by both DSD's on
their own.
Just make sure you get the unversal dual LNB - thats the one for PAS
7.
Cheers
Speed
www.sasat.com
timo...@yebo.co.za
Thanks for the info. For the record and other readers that may follow this
thread - the tv to which the Mnet decoder is connected is only used to
receive tv1 tv2 tv3 e-tv Mnet and csn (and a weak bop signal). I have
subscribed to receive separate analogue (Mnet) and digital (dstv) signals.
Although I have laid on a cable from the satellite dish (decoder) it is very
seldom used and is plugged into the tv set only after removing the analogue
cable. The two cables are not connected simultaneously because of the
interference you described. Some years ago (pre digital) the sabc sent a
technician to my house (free of charge) to try and solve the ghosting
problem but apparently I am in an area (Roodepoort) that is prone to poor
analogue reception.
The satellite dish is *mine* :-) and is connected to *my* tv and is used
mostly for infotainment and sport channels.
Regards
Timothy
Rick Lugg <rick...@iname.com> wrote in message
news:7kq3mp$o1i$1...@news3.saix.net...
Austin Graves
Are the sat receiver and your Mnet decoder on top of each other? If so
separate them. A very similar effect sometimes happens if a VCR and decoder
are too close.
You can use two decoders off the same LNB (using a dc pass splitter) but if
the IRD connected via the dc pass is tuned to a horizontal service then the
other IRD will not be able to watch any vertical services and vice versa.
The Sentec services as well as some Dstv services are on vertical
polarization. You can use a twin o/p LNB, one for each IRD.
I hope this helps
Austin Graves
timo...@yebo.co.za wrote in article <7kohoi$8hu$1...@news3.saix.net>...
>
timo...@yebo.co.za
also received e-mail directly. When I posted my question I wasn't even sure
what my problem was exactly. Now I know enough to also give advice and that
advice would be: Post your digital questions here. There is a lot of
knowledge here that readers are not shy to share.
Regards
Timothy
<timo...@yebo.co.za> wrote in message news:7kohoi$8hu$1...@news3.saix.net...
| Hi,
|
| I am at present receiving dstv via a Panasat 642 decoder and M-net
| via an analogue decoder. There is a lot of interference with the analogue
| signal (waterfall effect on the right-hand side - about 3 cm wide - and
| ghosting). I do not wish to receive the digital Mnet
| signal through my Panasat as this restricts my viewing to one channel at
a
| time.
|
| Is it possible to connect two digital decoders to one dish (and LNB). If
| so, must the two decoders be of the same make or can I, for instance,
| connect a Multichoice decoder as a second decoder. Will it then be
possible
| to receive any dstv channel on the Panasat at the same time as
| receiving Mnet or the Sentech channels on the other decoder.
|
Kevin
Yes u can have Sentech Bouquet on one IRD and DSTv bouquet on another IRD
namely your Panasat
I would suggest getting a TWIN output Universal LNBF and A Multichoice/
Vivid DSD IRD
I would use the Panasat 'for DStv and then use another decoder
(Multichoice/vivid as the other) for Sentech.
I do know that the Multichoice dsd660 has a loop through connection for
using another sat decoder.
if u use this method the Advantage is u don't need a twin LNB "Cheaper"
and disadvantage is u are restricted to Polarisation, Vertical or
horizontal Services.
Your cable is not to much of a problem - 20m - If u use good quality and
designed right u can do it !
I hope I have helped in answering u`re question.
thirdly your interference described on your Tv aerial sys sound like a bad
install, or u are in a "hole for reception"
which side is your ghosting to the Left or Right.. I assume will be to the
right >???
The lines u have on your pic sounds like "cross modulation/ co -channel
interference, which can be caused by a an adjacent channel like "e-tv". e-tv
is set to Ch47 from Brixton(JHB) and The DSD output is default to Ch46.
These most of the time effect each other. As explained that the analogue has
this interference, therefore u must check if its the Aerial or interference
caused by an adjacent channel.
What u can do is switch the test switch on the back of the mnet decoder "the
black screen with white bars" and then look at the picture, if u still get
the Patterning then u have to move the Frequency of the decoder. IF the bars
"test signal "is clear then there is a definite problem with your Aerial.
If u have any question I will be more than willing to help u out!!!
Regards
kev
Greg Murrell
>>Is it possible to connect two digital decoders to one dish (and LNB).
>
>Should be no problem - I have two digitals running off one dish - you
>need a twin LNB though (with two outlets) - cost around R500. If you
>use a splitter on a single cable you will pick up problems with the
>Verticle & Horizontal channels as only one DSD can do the switching.
The new Multichoice receiver (DSD660) has an output for extending
the dish lead to a second receiver without a splitter. It works well,
apart from the obvious problem with vertical and horizontal channels
as you have described. But the important point to remember is that
EACH receiver will need a smartcard, and therefore an extra subscription
fee. You can't chain a number of IRD's together and make use of a
single subscription :-(
SeeYa!
Greg