Re: SR1 configuration.


geojohnt@...
 

Ernst,

Thanks for the information.

And for your further email link regarding NewTec receivers - interesting.

>https://www.youtube.com/watch?v=VAcO2YezfZg

>AFAIK this was used from DVB-S2 day one in EUMETCast Uplinks and professional NewTec >receivers.
>DVB-S2X will allow for sharper bandwidth filtering than current DVB-S2 (problem as always is >drivers!).

Regards,
John.

++++++++++++++++++++++++

-----Original Message-----
From: Ernst Lobsiger via groups.io <ernst.lobsiger@...>
To: MSG-1@groups.io
Sent: Wed, 1 Jul 2020 17:44
Subject: Re: [MSG-1] SR1 configuration.

On Wed, Jul 1, 2020 at 09:02 AM, <geojohnt@...> wrote:
So, does this matter?
Does it make any difference?
 
BTW, I've no idea what Roll Off is.
 
John

RollOff means how steep the bandwidth filter prevents from interference by close transponders.
20% is somewhat better (sharper) than 25% but you will probably not see any difference such
as increased power and less lost packets. Originally EUMETSAT was talking about 5% RollOff but
only (Non Standard HW, AFAIK 20% is best for DVB-S2) NewTec receivers can possibly do that.


Regards,

Ernst

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