Re: R: [amsat-bb] What's Wrong?

[K5OE@xxxxxxx]

Dom,
The high squint of the satellite's antennae make circularity polarity practically meaningless.  At low squints this will certainly make a difference, but at today's angles, it is effectively random.  The same is true, if not more so, on the U-band uplink.  I find at squints greater than 20 degrees, the preferred polarity is often LHCP (but certainly not all the time).
73,
Jerry, K5OE/VU

"i8cvs" <domenico.i8cvs@tin.it> writes:

> Hi Jerry,
> 
> I aegree with you exept that the patch feed is connected for LHCP to receive
> RHCP through reflection from the dish.
> 
> Using only the patch connected directly to a low noise receiving system to
> receive directly the AO40 beacon and some strong signals in the passband it
> is possible because the patch gain is 8.5 dBic but it is necessary to
> connect the active element of the patch for RHCP
> 
> 73 de i8CVS Domenico

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