---
tags: Satellite Electrical, ss, ncu
author: N0-Ball
title: HW07
GA: UA-208228992-1
---

# Problem


# Ans

Effective Distance = $-6378 \times \sin \left( 10^ \circ \right) + \sqrt{\left( 6378 \times \sin \left(10 ^ \circ \right) \right)^2 + 600^2 + 2 \times 6378 \times 600} \approx 1932.24$ km

## Linked Budget

| Item | Equation | Value |
| --------------------- |:---------------------------------------------------------------------------------------------------------------- |:------- |
| Transmitter Power | x | Target |
| Antenna Gain | x | -6 |
| Transmissinon Loss | x | -0.1 |
| Tx Impedance mismatch | x | -0.5 |
| Path Loss | $\left(\frac{4 \pi r}{\lambda} \right) ^2$ | -150.97 |
| Atmospheric Loss | $d \times 0.001 \left[ 0.00719 + \frac{6.09}{f^2 +. 0.227} + \frac{4.18}{\left( f - 57 \right)^2 + 1.50}\right]$ | -1.6 |
| Polarization Loss | x | -3 |
| Antenna Gain | x | 18.95 |
| Unpointing Loss | x | -1 |
| Rx Impedance mismatch | x | -0.51 |
| Noise | kTB | 163.77 |
| SNR minimum | x | -10 |
| Margin | | -6 |
| | | |
| Total | | 3.04 |

$0 - 3.04 \text{dbW} \approx \underline{0.497 \text{W}}$