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Re: poor snr on ao 40 2nd note



Helmut
pointing errors would explain the contradiction in sun noise and lack of
signal on ao 40 however the dish was manual peaked and made several
measurements

nick


----- Original Message -----
From: "Helmut Strickner" <hstr@gil.com.au>
To: "Nick Pugh" <quadpugh@bellsouth.net>; <amsat-bb@AMSAT.Org>
Sent: Thursday, September 20, 2001 8:41 AM
Subject: Re: [amsat-bb] poor snr on ao 40 2nd note


> I believe that you are having pointing problems with your 6 ft dish!
>
> Nick Pugh wrote:
>
> > Here is my set up
> >
> > 6 ft dish gain 31 db linear pol
> > DEM pre amp .85 db nf gain 17 db
> > AIDC 3733 lnb stub removed
> > 3 db loss coax between LNB and receiver
> > Yaesu 736 receiver
> >
> >
> > I am receiving 6db of sun noise  this implies g/t of 8 db
> >
> > I am receiving the MB  15 db above the noise with squint angle < 10 deg
> > range app 50 k km.I think that i should see the MB at 27 db above the
> noise.
> > To put it another
> > way if i see 6 db of sun noise what should i see the MB with squint
angle
> <
> > than 10 deg range app 50 k km.
> >
>
>
> ----
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