Figure $2$: EIRP map for the Astra$-1$KR Satellite to be considered in question $4.$

Imagine that someone in Iceland would like to receive these TV channels using a receiver $/$ decoder that "just about" worked adequately in Germany. To do this they decided to improve $/$ modify the external equipment $($the external equipment comprises a dish and associated electronics$).$

$4\mathrm{.}1$ How much improvement in SNR $($id dB$)$ does the external equipment require? How can this be achieved without changing the electronics in the external equipment? State all assumptions and show your calculations.

$4\mathrm{.}2$ If the original dish has diameter of $1$ m $,$ how big should the new one be to achieve the required improved gain?

$4\mathrm{.}3$ Will this new dish in Iceland have more, less or the same amount of sensitivity to minor movement due to wind etc. compared to the original setup in Germany?

$[20\backslash \%]$

$4\mathrm{.}4$ In order to improve the reception further they also use a better quality cable connecting the external equipment to the TV decoder. This new cable has $3$ dB less loss compared to the original $-$ comment, in general terms, on the likely success or failure of this approach. $[10\backslash \%]$