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SAT-Usenet 06/98




SAT-Usenet 
06/98 
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- DISCUSSION ON TWIN-LNB

Watch out, if Your twin Lnb is for the type used for internal distribution.

If it is, You will only have vertical signal on one and horisontal on the
other.

Perhaps this is a stupid reply, but ive experienced it myselfe and it took
me several days to discover that fact.

The twin lnb im using now (Cambridge) produces the excact same result
as when i use a single - there should be extremely little difference.

On cirkular polarisation - with the first mentioned twin lnb - i could
notice a
reduction in the signal!

Therefore this reply - perhaps thats your problem?

tommy

G.A wrote in message <6ao6k1$2c6$1@news1.sol.no>...
>I use a twin Lnb for 1W, i have 2 receivers.
>After changing to a twin Lnb i registered a weaker signal on both my tv's
>but especially on my new tv with a amstrad decoder. I have about 30 Metres
>coax cable. Is the cable too long and is it therefore i receive weak
signals
>? Should i use a thicker cable ?
>Or is weaker signals what one must expect when using a Twin Lnb ?
>I appreciate any comments...
>
>
>
>>>>
Manufacturers of twin output LNBFs include an extra 3dB amplifier stage to
ensure that both outputs are at the same level as a single output LNBF.
As a first step, if you do not have a sat meter available, is to take the
receiver and a portable TV to the antenna, use a short length of coax, 
and check the picture quality there. If the picture is free from sparklies 
then replace your coax or fit an in-line amp. If the picture has some
sparklies
and the set-up is OK, then have your supplier exchange your twin LNBF.

Wibs

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- TO EVERYONE INTERESTED:

Canal+ Codes: 29/01/98 (23.20GMT)

Multimac: ( ident 00 2b 30) 

3210 5601 1332 7233 1134 4435 3426

Hex:

00 29 45 8a e9 88 bb a3

from: http://freespace.virgin.net/justin.johnson/


- WHAT IS IRDETO, ANYWAY ?

In article <886154997snz@dsl.co.uk>,
  bhk@dsl.co.uk (Brian {Hamilton Kelly}) wrote:
>
> In article <Pine.A32.3.94.980129134355.31696A-100
>            lrt20892@rpool13.rus.uni-stuttgart.de "dl8ser" writes:
>
> >
> > Hi group ..
> >
> > Sry for this maybe stupid beginner question .
> > but I need to find out what Iderto means ..
> > What ist this ? Where can I find informaton
> > about this mode ? A search at hotbot revealed
> > NIL results !!
>
> Irdeto (note the spelling: perhaps this is why you couldn't find the
> misspelt form?) is a company and an encryption system.  The Irdeto
> encryption of which I'm aware was (is?) used on the analogue cable
> distribution in NL & BE of the FilmNet Multichoice service.  The company
> was part of Nethold, and also associated with a South African
> distribution system; what their position is these days, since Canal+
> bought out FilmNet, I wouldn't know.

Actually, IRDETO was developed in South Africa for the M-NET pay TV channel
about 15 years ago - http://www.irdeto.co.za/ & http://www.mck.co.za/ - This
was a terrestrial PAY TV channel encoded in a similar format to D2MAC (sound
channels were encoded digitally).   It did not have a smartcard - each decoder
was individually accessed by its serial number over the air.  M-Net did
**VERY** well financially and M-Net subscribers (of whom I was one) probably
helped subsidise the development of all future IRDETO technology.

IRDETO stands for I.R. DE TOONDER, the developer of the M-Net decoder - who I
believe now lives in the Netherlands - and most of the IRDETO development is
now done in the Netherlands (check http://www.irdeto.nl)

Hope this adds to your understanding :-)

Regards,

Aris


- HOW TO SETUP A POLARMOUNT


In article <KpnydAAbv4z0EwSv@ambiance.demon.co.uk>, Alabama
<alabama@ambiance.demon.co.uk> writes
>I am about to try to install a lenson Heath 1 m dish, Polar mount, and
>12" actuator, for my Pace 1000IP

good luck!
>
>Can some kind reader of this group please advise how to adjust the
>mount. As I understand it the first step is to set up the Elevation and
>declination angle on the dish. ( I've already done this using a program
>to calculate my Site angles. )
>
>I assume next step after ensuring pole is completely vertical is to get
>the mount onto true south ( use 1 west as a starting point ? )
Yes start here (1W)
Use the pal signals to align the dish and LNB correctly.
I use a small piece of tin foil over the front of the LNB to make
signals weaker, listening to the audio is often easier than watching the
pictures!
(I assume you have no sat test gear!)
>
>Then what?

Do it again, and again till it is correct!
The weight of the dish and mount on my setup makes the pole bend
slightly! (pole too long!) so i had to compensate by adjusting the
bracket!
>All help and advice appreciated.

The first time ...... Takes a lot of time!
Good luck
Yous.

******************************************************
** Youssouf Seedat.  youssouf@bengeo.demon.co.uk.   **



- UPGRADING YOUR EXISTING SYSTEM


On Wed, 28 Jan 1998 10:14:11 +0000, Peter Embling
<Peter@bookstore.demon.co.uk> wrote:

>I have an ancient Amstrad 60cm dish with the original "blue cap" LNB.
>Last year, as the first part of a full upgrade, I upgraded the receiver
>to a MSS1008ip and added a converted BSB D2Mac decoder (just in time for
>everything to leave Astra :-( )
>
>I can now just about afford to afford to upgrade the dish to a motorised
>set up but the choice is bewildering! I live in Essex and have the
>benefit of a good south facing wall to mount the dish on, so my
>questions are:
>
>What is the difference (and is there significant benefit, considering
>the cost) between a Lenson Heath type offset dish and the vastly more
>expensive Gregorian?

I personally got the 1.2 m channelmaster, can get most things even in
heavy rain, and the cost was about the same as a 1m dish.
>
>I'm thinking of a H to H mount (Silent Gold?) but what is the difference
>between a H to H and a Polar Mount?
>

I have the polar mount that comes with the dish. this is a 3in dia
pole mount thingy, so make sure your bracketry is up to it!


>I think I need a 1m dish but would I gain a significant benefit from a
>1.2m? (don't want to go bigger - I'm already planning to do the
>installation when the wife's out for the day and hoping she won't notice
>next time she hangs the washing out!!)
>
>Lastly, having been quoted 750GBP by a local installer to supply and fit
>the upgrade I think I'll have a go a fitting it myself, so do either of
>the above choices have significant pitfalls to the unwary?

its a good fitted price, I paid 480 including the vat for a pace 508,
1.2m dish 100m control cable, 100m ct100 coax, 10 foot pole and heavy
duty tk brackets. I fitted the whole lot in 4 hours myself, using a
compass and a signal strength meter.

you have to make sure that the pole is absolutely vertical, from there
it is the proverbial bit of piss......



George

>-- 
>Peter Embling                           "Success is getting what you want,
>Peter@bookstore.demon.co.uk              Happiness is wanting what you get"

Who needs rose coloured spectacles when MY eyes are always bloodshot!

http://www.slamdog.demon.co.uk

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