SAT-Usenet 47/97

from: owner-sat-usenet@tags1.dn.net
Date: Sat, 4 Oct 1997 09:36:40 -0400 (EDT)
SAT-Usenet 
47/97
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Subject: Re: AFN TV
From: crookesp@aol.com (Crookesp)
Date: 21 Sep 1997 11:09:26 GMT
Message-id: <19970921110901.HAA06001@ladder02.news.aol.com>

In article <19970921092901.FAA04231@ladder02.news.aol.com>,
goodhikers@aol.com (Goodhikers) writes:

> ONLY personnel living in barracks areas on a US base
>can gain access...via cable linked to master satellite receivers. 

And people lioving in certain accommodation
with US connnections.

A friend of mine living in Berlin, ex-US Army, ex-RIAS,
moved into a new apartment and found AFN, four channels of it,
on the cable system in his building.

It's an Amerikanische Viertel, tho (American neighbourhood)
which I suppose in earlier days was where Americans involved
in the now disbanded occupation group would live.

As far as I know, the Scientific Atlanta encryption used
is unique to AFRTS, and has not beren hacked.

*Philip*

Subject: Re: AFN TV
From: goodhikers@aol.com (Goodhikers)
Date: 21 Sep 1997 09:29:16 GMT
Message-id: <19970921092901.FAA04231@ladder02.news.aol.com>

>They used to be on Eutelsat (10 East), broadcasting in B-Mac.  A couple of
>month ago they switched to a digital signal which is also encrypted.  I
>don't think there are any cards that would work on their encryption!
>Sorry, but the "join the army" theory is probably still the only
>alternative.
>
>

Even joining the Army is no great solution...I live off base in Germany
(in the US Air Force) and have no way to get those signals.  There was some
talk about leasing the decoder boxes to US Forces, but have not heard
anymore about that.  ONLY personnel living in barracks areas on a US base
can gain access...via cable linked to master satellite receivers. 

Oh well...


Subject: Re: MPEG, MPEG2, PAL, SECAM, NTSC
From: mstollov@aol.com (M Stollov)
Date: 22 Sep 1997 06:47:54 GMT
Message-id: <19970922064701.CAA22079@ladder02.news.aol.com>

In article <341ee5f9.582193@news.analog.com>, chris dot muriel at analog
dot com (Chris Muriel) writes:

>>NTSC                   " The USA (& Japan) Color standard (National
>Television Standards Committee)
>>

Also knows as "Nasty Television System for Cameras" & the name screamed
loud & clear by generations of US TV viewers as they tore their hair out at
the sight of blue trees & yellow skies, "Never Twice the Same Colour".....
you had to see it to believe it!

>SECAM     this has been explained already in a previous post, but has
anyone heard of teh SECAM nightmare you get in TV studios.

SECAM is basically PAL with the colour information encoded as an FM
signal, unlike PAL's double sideband suppresed carrier (DSBSC). When you
fade or mix a PAL signal in a studio desk you get the colour info going up
& down with the luminance (brightness or the black & white picture info).
This doesn't happen with SECAM as anyone who knows about FM will tell you
it's all about frequency & not amplitude, so the colour doesn't vary as you
fade the picture & you get increased saturation until the colour
discriminator can't handle it any more & it drops out!

The solution (honestly it's true!) was to CONVERT the SECAM inputs into
PAL for the mixing desk, mix them, then convert them BACK again at the
output! And the French have the cheak to think we are all "merd".

Maybe it's all different now with the advent of high speed DSP, but
certainly that's how it was done up to a few years ago.

Ah well, such is railway station (think about it all those of you who
speak a little french).


Yours,

MaD, bAd MotoRiseD Mike.

Subject: Re: Sky Digital Plans
From: cps_rjz@cistron.nl (Rene)
Date: Mon, 22 Sep 1997 09:44:13 GMT
Message-id: <342933c0.9514641@news.cistron.nl>

On Thu, 18 Sep 1997 11:47:42 +0100, "RSD Communications Ltd."
<sales@rsd-communications.co.uk> wrote:
 (may be partially quoted)
>Chris Heaton wrote:
>> 
>> Does anyone know if it true that Sky plans to broadcast it's digital
>> service in MPEG4 not MPEG2?
>
>
>Actually rumour has it that they will be using MPEG13 which can squeeze
>about 100 channels into a single transponer although in their case that
>will mean about 300 channels ;-)
>
This is correct. MPEG13 makes use of the ever increasing occurrence of
re-runs of outdated material. The redundance thus created makes
fenominal compression rates available. Furthermore, commercials will
be uploaded in your systems DRAM, so your receiver can provide you
with a mind-numbing everlasting repetition of feeble minded
commercials without burdening the output of the broadcast system. You
can even watch commercials when your dish is unplugged.

....Best Regards, Rene



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