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Updated WeatherFax (markdown)

Brumi-2021
2025-04-06 12:43:06 +02:00
parent 08fae62a39
commit 5a71daa98e
1 changed files with 1 additions and 1 deletions
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WeatherFax.md

@@ -11,7 +11,7 @@ Some example of the spectrum frequencies are the following ones ,
![image](https://github.com/user-attachments/assets/a47935e7-c08c-4d05-9137-a006764b894d)
For better usability , we are internally applying that tune-offset . Therefore you just need to tune the official published WeatherFax frequency transmitter. (3.855 Khz in that example)
For better usability , we are internally applying that tune-offset . Therefore you just need to tune the official published WeatherFax frequency transmitter. (3.855 Khz in that example, or 7.880 Khz , 8.040 Khz ,...)
That Wefax App is combining two consecutive demodulations. First RF USB audio baseband demodulation , and later demodulating the FM subcarrier audio baseband tones. (Audio Baseband with f_subcarrier fsc (1900Hz) FSK mod +-400Hz ; Shift White pixel +400 Hz = 2.300 Hz , Shift Black pixel -400 Hz = 1.500 Hz).