[Ground-station] Gateway update + Gateway orbit modeling

[Michelle Thompson]

Stratospheric... atmospheric... ionospheric... anodes... cathodes...
electrodes... overloads.... generators.... oscillators....

it all starts to run together.  :+)

This technique is good to know in case we need to bring it to heel.

I'm not afraid of the work. We just need to know what must be done.

-Michelle W5NYV



On Mon, Mar 23, 2020 at 2:02 PM KENT BRITAIN <wa5vjb at flash.net> wrote:

> Woops, the speal cheeker program got me.    Atmospheric Bending
>
>
>
> On Monday, March 23, 2020, 4:00:46 PM CDT, KENT BRITAIN via Ground-Station
> <ground-station at lists.openresearch.institute> wrote:
>
>
> Good info, I have seen 1.5 deg difference between the Calculated/Optical
> position of
> the moon and the Radio moon.   The problem is stratospheric bending.
> I once asked Tom W3IWI how they dealt with this on the big dishes.
> "We track 4 Quasars Horizon to Horizon then do lease squares best fit.
>   Our tracking programs also allow for Barometric Pressure, Air Temp, and
> Humidity"
>
> For a 6 footer, this bending should be a non issue above 40 deg or so.
>
> Kent
>
>
>
> On Monday, March 23, 2020, 3:51:30 PM CDT, Michelle Thompson <
> mountain.michelle at gmail.com> wrote:
>
>
> We baseline a 2m dish for the JAMSAT/ORI effort.
>
> I assume this will be about 45dB of gain with the usual dish efficiency
> losses, and will give a 1 degree 3dB beamwidth.
>
> -Michelle W5NYV
>
>
>
>
> On Mon, Mar 23, 2020 at 1:17 PM KENT BRITAIN via Ground-Station
> <ground-station at lists.openresearch.institute> wrote:
>
> Back to my original question, what gain are you designing around for the
> ground station antenna?
>
>
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