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Updated NOAA (markdown)

Brumi-2021
2025-05-11 23:53:18 +02:00
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NOAA.md

@@ -45,8 +45,7 @@ Hackrf, like the rest of SDR receivers, have not enough sensitivity to receive
The most simple antenna you can use is a [V-dipole antenna](https://lna4all.blogspot.com/2017/02/diy-137-mhz-wx-sat-v-dipole-antenna.html), consists of two wires or rods of 52cm, spread apart by 120 degrees. Instead of using a protactor you can use trigonometry, the distance between the tips of each rod should be around 90cm.
![image](https://github.com/user-attachments/assets/9c159b8f-c8cd-48d1-b544-0f5747b95c4c)
![image](https://github.com/user-attachments/assets/ffb0e67b-f52b-4a9d-bd29-69681e38fc17)
You can tune , inputting directly any of the 3 x above current NOAA Satellite frequencies (NOAA 15: 137.62MHz. NOAA 18: 137.9125MHz. NOAA 19: 137.1MHz) ,and check at what exact time , the satellite will be visible in his orbital pass. (there are many programms and web links to check the exact local time pass to your ground station place ) .
Here you have, some predict and tracking web links examples :